A couple of drinking partners, who are aircraft technicians, are in the hangar at Biggin Hill; it's fogged in and they have nothing to do. One of them says to the other, "Man, have you got anything to drink?" The other one says, "Nah but I hear you can drink jet fuel and that it will kinda give you a buzz." So they drink it, get smashed and have a great time; like only drinkin' buddies can do. The following morning, one of them gets up and is surprised he feels good, in fact, he feels great ... NO hangover! The phone rings, it's his mate. The guy says, "Hey, how do you feel?" He replies, "I feel great!!" His mate says, "I feel great too!! You don't have a hangover?" "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 ..." "What's that?" "Did you fart yet?" "No" "Well, DON'T, 'cause I'm in f**king Cambridge!"