<< Cup your hand and place it in front of your butt, then break wind into your hand, then open your hand right in front of an unsuspecting friends face and open your hand. Your friend will be pleasantly suprised!! >>
Oh man thats the best...
Or how about....
When your driving with friends, say its getting kinda cold, and roll up the windows, and lock them so the person at the window cant roll it down.
Next, turn on the Heater in your car to the hottest setting and also turn on the fan to the highest settings.
Next.. LET THAT BAD BOY RIPP. And i guratee your friends will hate you for the next week! Turning on the heater for some reason makes your fart more potent smelling then if you had the AC running instead of the Heater..
Have Fun!!