Mexican Bullhorn 

The Mexican Bullhorn is a greeting that originated deep in ancient Aztec culture. A host would tuck in his shirt just before a fart, pass gas, and place his face down his collar to inhale the vapors. Next, the host looks his victim in the eyes and exhales the flatulence into his face.

Alex smiled as Scott approached. He subtly brought his shirt collar up above his face and took a deep breath. When the unsuspecting prey was within an arms reach Alex exhaled full force--the Mexican Bullhorn had rendered Scott (or your FBF) unconscious.

Mexican Bullhorn by Meester Harret May 20, 2008