Top definition
When a man has an extremely large boner and the female/male (depending on preferences) grabs the large boner and bends in a very obstructive fashion, which may lead to a crack in the pelvic area.
I was at my friends and he was having a very pleasurable dream and so i decided to give him the japanese whammy bar.
by 69 Baby Jesus 69 June 30, 2009
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