1 definition by Someone with another email address is using the name joshua
the insertion of your hand into the anus of your partner and proceeding the wiggle your fingers inside while strumming the air guitar with your other hand.
so i was hanging out with the chick last night listening to Led Zepplin and she totally let me play air butt guitar to "Kashmir"
by Someone with another email address is using the name joshua April 8, 2008