The story
Cassell's Dictionary of Slang suggests it is from biff (“hit”) because one biffs against it during sex.
Etymology from Wiktionary, CC BY-SA 4.0.
Biffin's bridge
Today it means: The perineum. Full definition →
Today it means: The perineum. Full definition →
Cassell's Dictionary of Slang suggests it is from biff (“hit”) because one biffs against it during sex.
Etymology from Wiktionary, CC BY-SA 4.0.