Trampoline

[Tina]

A piece of equipment that you [jump on] and do many [tricks] on like Front [Flips] and Back Drops.. Etc

[Cami]

A strong fabric sheet connected by springs to a frame, used as a springboard and landing area in doing acrobatic or gymnastic exercises.

[Sonia]

The actof a girl riding a guy but [bouncing] up and down on his cock. WARNING: If the cock [slips] [out of place], prepare for pain.

[Luis Fok]

A male sexual display;

The act of stretching ones scrotal [skin out] with two hands - using thumb and forefinger - parallel to a primary surface (i.e. a bed or floor) until smooth, with the penis resting on top, utilizing the grip and [taut] skin to move the scrotum up and down at various speeds to have the penis [bounce off] of it continuously.

[Michiko]

The part of your [shirt] thats [stretched out] between [the gap] in your boobs.

[Becky]

The process of fingering a girl when she still has her panties on. You would push on the outside of the panties, pushing them into the womens vagina. It is in-titled the Trampoline because the panties [push back] just like a trampoline would. [Trampolining] a girl is not consider a good thing, and you should make fun of a friend if that is all he/she has done, however it is better then [getting nothing].

[Tariq Zaki]

Trampoline in Diving. Used by divers for practicing routines.