Bill shouted out to his wife Ann, "I'll get it!" when the doorbell rang. He went to the front door and welcomed in David and his wife Susan.
"Come in! Everything's ready, just need to throw the burgers on the grill. I'm heading out back - grab yourselves a beer in the kitchen and make yourselves at home."
"Thanks, we'll do that" said David.
Bill and David were long-time co-workers, and their families had been gathering every few weeks in the summer for barbecues for years. All the kids were long since on their own, but the two couples, all in their late 50's now, enjoyed continuing the tradition.
Bill headed grabbed the burgers from the fridge on his way out back to start grilling. Ann was in the kitchen, and after giving Susan a hug hello, the two women started arranging dishes and condiments. David trailed Bill out back with a beer in hand.
The evening proceeded casually, as the meal preparations were completed and they sat around the picnic table out back chatting. As dusk began to settle in, David excused himself, nodding towards several empty beer bottles, saying, "What goes in, must come out!"
While David went to use the bathroom, Bill and the women began cleaning up. "I've got ice cream for dessert in the freezer in the garage," Bill said. "Why don't you gals bring out some dishes while I go grab it."
As the women headed into the house, Bill went around the side of the house to the freezer inside the garage. Now the guest bathroom, which was also the laundry room, was between the kitchen and the garage, with doors going both ways from the bathroom. As Bill passed the bathroom door in the garage, he noticed the door was ajar. David had entered from the kitchen side, and apparently hadn't noticed the other door was not shut.
As David reached to close the door, he caught a glimpse in the bathroom mirror, and froze with his hand mid-air. Reflected in the mirror was David, but he wasn't back to the mirror as he would be to take a whiz. He was sitting down on the toilet, pants at half mast, and was stroking his hard cock furiously. Bill was frozen in his tracks, but not by the sight of his long-time friend beating his meat. With his other hand, David held something purple up to his face, eyes closed. Bill recognized the purple material as a pair of Ann's panties. David was wanking away with his face buried in a pair of Bill's wife's panties.
Bill had stood there for only a few seconds when David shot his load, hot cum rolling down the side of his hand. As his orgasm subsided, Bill watched him lift his hand and lick off his own load. Before David came back to reality, Bill quietly backed out of the garage, not quite sure what to do.
Bill waited out front until he heard the other door to the bathroom open, indicating David had finished his business (hopefully putting everything back), and had left via the kitchen. Bill went back into the garage and grabbed the ice cream, then returned to the back yard around the house.
He was glad to see that David was acting his normal self, apparently unaware that Bill had seen him in the bathroom. Bill had no desire to cause a scene - he needed to think about what he had seen. The evening ended pleasantly, like many barbecues in the past.
--
Bill couldn't get the episode of David wanking with his nose buried in Ann's panties out of his mind over the next few days. He wasn't angry; in fact, he found himself quite turned on by the images in his mind. He had to go to the restroom at work a few extra times each day, to have a quick wank himself, while he replayed the scene of David's hand bobbing up and down on his hard cock, with his nose buried in purple panties.
Though it had been a number of years, Bill himself had occasionally enjoyed some women's used panties. There had been a time in college when, after a racquetball match, he'd given the coed he'd played a ride home, and she had left her gym bag in the back seat of his car. He'd taken it into his apartment that night and cum several times with his nose buried in the pungent, sweaty, aroma of a young woman's pussy.
And a few years after that when a co-worker he though was hot has asked him to bring in her mail and water her plants while she was on vacation, he had found a pair of her soiled panties in a hamper, and had enjoyed them immensely, sniffing, smelling, and eventually licking the dried cunt-spot juices, their taste a sharp and tangy sensation on his tongue.
So, no, he wasn't angry. In fact, the more he thought about it, Bill thought he might have an opportunity here. By the next barbecue at his house, he had a plan ready.
--
Everything was ready before David and Susan showed up that evening. The grill was hot, the side dishes prepared, condiments ready to be taken out to the picnic table, and... the vanity lock on the bathroom door to the garage was "adjusted" just enough that the door would latch, but not lock. Bill also left the door ajar, in hopes that he'd be able to see any action, which would make the timing of his plan easier to execute.
