Top Definition
When one removes his penis from an ass and finds fecal matter attached to the head of his penis.
When Sarah asked me to fuck her in the ass, I didn't realize it was an invitation for a shit helmet. I guess I found out the hard way.
by fav January 23, 2007
(noun) When a lover dumps a Cleveland steamer on the other lover's head, usually by request.
Come on baby, give me shit helmet.
by Antenna Wilde February 14, 2008
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