While a male is performing oral sex on a female who has not given him the go for full intercourse, the male waits until the female is distracted (i.e. grabbing a pillow or something to muffle her sounds as if to not alert anyone in the next room (like parents)) to initiate full on intercourse.
Guy 1: "This girl and I were getting down to it, but she told me we couldn't have sex. So I was like, "Alright," thinking that I would change her mind... Anyway, so I was eating her out, right? And she was trying to muffle herself since her parents were home but she couldn't help it, so she grabs a pillow and held it over her face. Once she did that, I was like "Giggity giggity!" and I put it in her."
Guy 2: "Dude, that's amazing, they should call it 'The Argelys'"