"Football Fantasy" joke

Two gay men walk into a Room, Followed by a straight guy.
"Hey how you doin Man, Im Tom and this is my pal gerry!
"Nice to meet you fellas! Im Bill.
"So uh! Me and gerry came up with this game you wanna play.
"Uh sure says Bill how?
A FART IS A FILED GOAL
A BIRP IS A TOUCHDOWN
GO!
TOM:FARTS= FIELD Goal
Gerry: Burps=Touchdown
Bill:Farts=BLOCKED