Top Definition
A safety manuever used in a canadian penetentary setting. When forced to give prison felatio treat the other prisoner good and as soon as you hear the first sign of pleasure (usually a moan of some sort) lock your jaw as a pitbull would and jerk your head from side to side like a dog with a pull toy. This has two possible outcomes you get shanked or you never have to use this manuever again.
"sure ill give u head ill treat you good too" but as soon as you moan I'll chomp and rip ur dick off just like a Preston Pitbull! Sack ya quick
by Samuel Leblanc September 30, 2009
8 Words related to Preston Pitbull

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