You find yourself in the RED Headquarter, you're now a new member of the squad

Scout: What's up, chucklehead?

Heavy: eating a sandwich Pootis!

Spy: Your mother!

Pyro: incomprehensible chatter

Soldier: Maggots!

Demoman: burps

Sniper: huh?

Medic: You are STOOPID!

Engineer: Howdy howdy!