Top definition
Someone who irritates you so much they block your asshole, rendering you unable to shit. Originated in Britain (logically).
"You fucking bumclot!"
"Yesterday, I shat a monkey. 'Twas the source of my bumclot"
"I would like you to sodomize me but I'm suffering from a bumclot"
by The Sexy Chemist November 09, 2006
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