When you go to fuck your mates girlfriend but he doesn’t have one, so you fuck his sister instead
Bloke1: Bro did you hear about ben?
Bloke2: Nah man what happened?
Bloke1: Tried to fuck my Misso but I don’t have one
Bloke2: Yeah?
Bloke1: So he fucked my sister!
Bloke2: Ah classic Alabaman Oliver