The penis, and all synonymous terms.
Based upon the marked resemblance between a UK policeman's (Bobby) head-gear and the male bell end or penis tip.
Excuse me, Constable Crisp, but why are you sitting on your sergeant's bobby's helmet!
by Mark November 25, 2003
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Head of the male penis that ironically resembles a British police helmet.
Ouch! Just caught my Bobby helmet in my zipper.
by September 16, 2020
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