Previously, in episode 2, Tony & Kilo blew up Alyssia's little secret. Kilo told Tony about Alyssia's open relationship and they discover her Tinder profile. They all end up fucking in Brick's kitchen, but something goes terribly wrong with Kilo's wiener. It doesn't end up getting hard so after Tony finishes her off, they decide to grab a drink from the bar.
Episode 3; The next morning.
Tony wakes up feeling like he was hit with a train. A train carrying 200 metric tons of Viagra that is. He was obliterated from drinking the night before but distinctly remembers Alyssia slipping a Viagra in his drink. She didn't even bother trying to be sneaky about it either!
If she wanted to have sex she probably didn't even need to ask but certainly didn't need to slip Tony a Viagra for a good fuck session. But when your friends, pranks happen. And when pranks happen, you have to own up to the consequences. Fortunately for us, house rules say that if you slip someone a Viagra, you have to let them fuck you until it goes away!