The story
From ass (“buttocks”) + guard (“protective part of a sword, machine, etc.”).
Etymology from Wiktionary, CC BY-SA 4.0.
ass guard
Today it means: A mudguard which is attached at the back of a bicycle saddle. Full definition →
Today it means: A mudguard which is attached at the back of a bicycle saddle. Full definition →
From ass (“buttocks”) + guard (“protective part of a sword, machine, etc.”).
Etymology from Wiktionary, CC BY-SA 4.0.