Air Shaft 

In the act of scissoring one girl shifts up a bit and rips ass in the other girl's vag thus causing a vibrating sensation on the clitoris.

When the two girls were scissoring the one had gas and performed an air shaft.

Air Shaft by Scissor Me'timbers January 8, 2009

harlem airshaft

Once the anus has stretched to its maximum capacity during anal sex, the penis is pulled out, leaving the anus open. The receiving man/woman/goat then flatulates, but since there is no skin to vibrate and produce a normal flatulent sound only the sound of rushing air is heard. Named after a Duke Ellington song.

"When Jay pulled that piece out of Marty's assbag, Marty's piece was spread so wide that when he farted it was a Harlem Airshaft."

harlem airshaft by copernicus p. alfonz September 7, 2005