1 definition by The Bum Willy Connoisseur

A bum willy is a term used for a man who has a below average cock size of 4 inches, where the woman feels the need to stick it in her bum as a last resort for any sort of feeling or pleasure during sex.
“Oh god I met a guy last night who had a Bumwilly the sex was abysmal.”

“I need to find a guy with a Bum willy so I can have comfortable anal sex.”

“The sex was so mediocre last night I had to stick it in my bum.”
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