1 definition by C. U. Farley

Top Definition
(verb): To insert one's head into a sex partner's anus, as if wearing them like a helmet. Requires surgical removal of the receiver's sphincter.
Bob was not happy to learn he would have to wear adult diapers for the rest of his life following the procedure that would allow Janice to helmet him.
by C. U. Farley May 22, 2008

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug