The sexual act of two people licking one another's assholes; considered to be physically impossilbe.
Jim tried to perform the butthole 69 position with Jenny, but ended up snapping his neck in the proccess
by mafioso March 23, 2003
 Get the butthole 69mug.
Get the butthole 69mug. by Bastardized Bottomburp March 23, 2003
 Get the butthole 69mug.
Get the butthole 69mug.