Gripkin
A gripkin is the act of using ones own hand to capture some of the gas as it is being passed out of ones own ass. This can be accomplished with or without cloths. The purpose is so that one can better smell the fragrance of ones own fart, however sometimes the purpose is to share the smell with a friend.
Jimpy always gets a kick out of surprising me by delivering a fresh gripkin to my face. Lucky for me he has a small hand!