Person 1 "Oh my did you hear about .....?? she was shaving her legs and while shaving she cut her leg that bad that you could see the bone"
Person 2"Oh my god that just made my bum wink!"
Person 2"Oh my god that just made my bum wink!"
by bumwinker March 22, 2011
When something gives you so much fear that it makes your bum wink, also known as 'the closing effect'.
by brownsource November 07, 2016