Expressions or actions performed that causes your boner to go into "shock" or go back into the flaccid stage.
That girl gave me boner shock when right before sex she said "I always forgets to take my birth control."
de MR. B3NNY 9 décembre 2010
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a sudden and immediate turn-off in the middle of an otherwise hot hook-up
"Brian bit Asaf's lip open right during the hook-up and he was sure he got an STD! What a Boner Shock!
de baby819 11 août 2011