It happened accidentally.
Tommy was engaged with two hoods in an alley, deftly parrying their attacks, when one of them managed to get a shot in right on his lower back. The gangster held up his hand in agony; he had punched Tommy right in the utility belt. Tommy knocked him out with a right cross, ending the hood's howls. The other quickly gave up and Tommy tied them both up for the police.
As he did so, Tommy became aware of a beeping noise. Tommy looked around before realizing that the beeping was coming from inside his cowl. And it was getting more frequent.
'Is it a bomb?' Tommy worried. He thought about removing the cowl, risking exposure, before suddenly he heard an engine over top of the beeps. The engine was getting closer. The beeps got more and more frequent until they were basically one continuous noise. When that happened, it came into view:
The Batmobile.
"Holy shit," The still conscious hood said. Tommy told him to shut up and then stared. The Batmobile was every male Gothamite's 2nd favorite dream ride (after Catwoman) and Tommy was blown away. The vehicle was massive, tank-sized, but it was also sleek and stylish like a sports car. It was long & black, shiny like new, and the engine rumbled menacingly. It was beautiful.
Tommy walked slowly towards the vehicle. As he did so, his cowl beeped again and then a center compartment slid open. It seemed to beckon to Tommy. He didn't waste a second and hopped right in.
As Tommy slid into the driver's seat, he became aware of one thing: he had no idea how to drive this thing. The panel in front of him was lit up with buttons, all of them denoted with different functions. None of them said "Drive." Tommy looked at them, afraid to touch. He thought.
'This thing drove here to find me, maybe it can take me to wherever it came from.' Tommy was slowly forming an idea in his mind. The suit Tommy was wearing was getting rather worn and cut up from his frequent fights. He was down to 3 batarangs. He was, in fact, currently homeless. Maybe finding Batman's lair could solve all of these problems for him.
"Maybe it's voice-activated," Tommy said to himself. "Take me to the lair!"
Nothing happened.
"Return me to the Bat, uh, hiding spot!" He tried. Nothing.
"Umm.... home?" The car roared off into the night, bracing Tommy fast against his seat. The Batmobile seemed to be able to change street lights, as it never once slowed down or stopped. It roared through the streets of Gotham, twisting and turning expertly through the streets. Tommy clutched the arm rests on his seat and yelled, "Woooooooo!!!!" It was the most exhilarating ride of his life... well, except for the time with Roxy Rocket. At least this time he wasn't afraid of dying at any moment.
The car/tank/wrecking ball zoomed through Gotham, suddenly bursting out of the city and into the surrounding area. Tommy noticed that they were leaving Gotham Proper and were now surrounded by trees. He quickly lost his bearings, as he was strictly a city kid, and eventually sat back and enjoyed the ride.
The car eventually hit a straight away and Tommy noticed that they were heading towards a dead end. 'Oh good, we must be here,' Tommy thought, but he slowly began to notice that there was no "here." There was nothing. Just a rock wall that the car was quickly speeding towards.
"Uh... stop," Tommy said. "Slow down," He said worriedly. "OH FUCK!!!" He screamed, throwing his hands up to shield his face as the car reached the rock. Tommy was expecting a crash but it never came. He looked through his fingers and noticed that he was now inside a tunnel, and then that tunnel opened up into a large cave. The car slowed, cut its engine, and opened it's driving compartment. Tommy slowly got out.
"Holy shit, it's like a... Batmancave," Tommy said with wonder. Deep drop-offs loomed on either side of him. A small walkway led from the car's resting place to a large platform. Tommy began to walk towards it, his cowl beeped again, and everything became illuminated. A large computer with many screens flicked on and started up. Rows of Batman costumes were visible. Overhead, a plan seemed to be hanging. Some sort of training ground was visible in the far corner.
"Holy shit," Tommy said again.
The computer seemed to finish starting up. Its many screens showed black and then suddenly cut to a prerecorded video. It was Batman. The real one.
"Hey, asshole in my suit: welcome. If you're as good an impersonator as I think you are you probably found the call signal for the Batmobile after a week or two..." Tommy swore. It had been 9 weeks. "...And now you're here. Thanks for shouldering the load for a little bit while I took a vacation. Now I need your help again. Superman and I have discovered a dangerous time rip that could destroy this universe and others like it. I need to repair it. While I'm gone, you're in charge. This mission is top-secret and I've taken steps to ensure that the only people who know I'm on it are you and Superman. Take care of Gotham and good luck. And kid..." Batman's eyes narrowed. "Don't fuck up." The screen faded to black.
Tommy gulped. He had wondered why Batman hadn't shown back up yet. Now he knew.
"Fuck me," Tommy said.
Tommy wandered over to the computer. 'Maybe this can help me track down some, uh, evildoers,' He thought to himself. He sat down at the computer and tried to get to work.
***
Tommy stared hard at the computer. While he had originally been looking for criminals currently active, he had been quickly distracted by the Super Database on Batman's computer. Thousands of clicks later, Tommy had found a picture database of the Justice League's activities. One picture in particular caught his eye: it was Supergirl Power Girl.Tommy ogled Supergirl's toned stomach and Power Girl's massive tits.
Tommy looked around and then chuckled to himself. 'Of course I'm alone,' He thought. His hand trailed down inside his pants and grabbed his hard dick. He wrapped his hand around it...
"Alert! Alert! Alert!" The computer sounded suddenly. Tommy's hand shot out of his pants and he held them both up into the air.