"A couple of airplane mechanics are..." joke

A couple of airplane mechanics are kicked out of the local bar and,
with no place else to go, end up in the hanger at SFO. One of them
says to the other, "Man, have you got anything to drink?" "Nah, but I
hear you can drink jet fuel - that'll kinda give you a buzz."
So they get smashed and have a beautiful time; like only drinking
buddies can do. The following morning, one of them wakes up and he
knows his head will explode if he gets up. But It doesn't. He gets up
and feels good, in fact he feels great - NO hangover! The phone
rings, it's his buddy. the buddy says "Hey, how do you feel?"
He said, "I feel great!!, and the buddy says, "I feel great too! You
don't have a hangover?" and he says "No - that jet fuel is great stuff
- no hangover - we ought to do this more often" "Yeah, we could, but
there's just one thing....
Did you fart yet?"
"No... ???"
"Well, DON'T, 'cause I'm in Denver.