1997...
19-year-old Vern stole some unidentified pills. They were called Horfies, a combination of roofies and hormones designed to put a woman in the mood while later taking her memory of the inevitable sexual encounter. His 18-year-old nerdy sister found them and then practically raped him until he filled her pussy with his incestuous cum. Then, because she forgot about them, it happened a second time and she got pregnant.
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1998...
It had been about three months since Vern's 19-year-old little sister Tess gave birth to baby Chet, though she was unaware that the child was also his.
The siblings sat on the living room couch, him pretending to watch Will & Grace on TV and making appropriate noises when the laugh track went off, but really he was perving on his sister as she fed their child. Lucky baby, he thought, as his eyes surreptitiously slid over the swells of her new, improved mammaries. Tess had been an A-cup before she got pregnant, but she seemed to be a C now.
"Mom and Dad are taking Chet to see Grandma and Grandpa this weekend," she informed him. "We should do something fun while they're gone...whattaya say?"
"Sure, Tess," he responded, making sure to keep his eyes fixed on the TV while she was looking right at him.
---
Tess had pumped out some extra bottles of breast milk for her parents to take along. They said their goodbyes, and then brother and sister were alone again for the weekend for the first time since the night Chet had been conceived. Vern's cock gave a twitch at that memory. He wasn't handsome, just okay, but despite his ability to con people out of their money, he just wasn't good with women; he'd only had sex twice in the last year, so he was super horny.
He headed to his room, considering. He knew his sister was still raiding his dirty magazine collection under his mattress pretty regularly, based on how they were arranged when he saw them later. He had hidden the weird roofies from the previous year in a more secure spot, but he wondered, if she found them again, would she take one, as before? Putting it into her drink didn't feel right to him, but if she did it to herself...
He pulled the bag of yellow pills out from under his chest of drawers, tossed them under his mattress, and then went out, telling his sister he'd be back in a couple hours with some beer.
---
When he got back, only an hour later, he left the beer in the entryway and went straight to his room, expecting to see his sister splayed out on his floor, ready for a sexy romp, as before, but the room was empty. "Tess?" he called out into the house.
She came around the corner from the kitchen. "Oh, you're back early! Excellent! I'll order some pizza...did you get the beer?"
"Uh, yeah, lemme get it..." Vern felt disappointed. He figured that Tess must have had other things to do than masturbate while he was out. He placed a couple of the warm beers in the freezer, set the egg timer to 20 minutes, and put the rest in the fridge. Then he plopped his ass down on the couch and grabbed the remote. "You wanna see what's on TV?" She nodded, and he found a movie on Showtime.
A while later, the egg timer went off. "The beers in the freezer..." he said as he made to get to his feet.
"I got 'em!" Tess jumped to her feet and ran into the kitchen. Vern heard the beers hiss open, and a minute or so later she came back with the bottles in hand, as well as some napkins.
"Thanks," he said as he took a swig of his beer. She took a sip of her own, frowned at the odd taste, and then gulped some more down. At 19, almost 20, Tess wasn't really old enough to drink, but Vern didn't care about that shit...he had just turned 21 himself, so could legally buy liquor, and he wasn't about to drink alone.