Top Definition
the phenomena in which your testicals are rested in your gooch while your legs are spread,causing your jeans to become firm protecting the goods. so hands,decks of cards, controllers,etc. are deflected.
person1- throws psp at person 2's croch
person2- deflets with trampolian effect.
person2- oh your good
#trampoline #balls #testicls #halo #pwned
by z-trip April 14, 2009
5 Words related to trampolian effect
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