sphincter bait 

bait for your almighty bunghole

he lit his sphincter on fire

sphincter bait by reno April 13, 2005

Sphincterbate 

The act of penetrating ones sphincter with their own finger, in an attempt to achieve pleasure and reach climax.

'I like to sphincterbate on my couch while nobody's home.'

Sphincterbate by JO3HO3 March 21, 2010

sphincterbater

A sphincterbater although sometimes female, is usually a male of homosexual preferences that gets a feeling of exctasy out of fingering their own anus.

MrPhat was caught by his mother sphincterbating the other night.

sphincterbater by ZEN 1 March 1, 2005