In this episode Grif exchanges Sister with the blues in which he say "Nope, just the girl. Sorry, there weren't any more aliens for you guys to fuck!" Which Tucker retaliates with "That's okay, we can still fuck this one!" Whats strange is Grif let alone any of the red teams member have never interacted with the aliens in season 4. That was an exclusive blue team experience. Why Grif knows this and comments on it is never explained.