TTT is for Taekwondo Trampoline Tennis

TTT is for Taekwondo
Trampoline Tennis,
give it a go

--fly

Trampolining is a competitive Olympic sport in which gymnasts perform acrobatics while bouncing on a trampoline.^[1] These can include simple jumps in the pike, tuck or straddle position to more complex combinations of forward or backward somersaults and twists.
There are three related competitive rebound sports, synchronized trampoline, tumbling (or power tumbling) and double mini-trampoline. -- http://en.wikipedia.org/wiki/Trampolining


Taekwondo (태권도; 跆拳道; Korean pronunciation: [tʰɛk͈wʌndo]; /taɪ.kwɒn.doʊ/) is a Korean martial art and the national sport of South Korea. In Korean, tae (태, 跆) means "to strike or break with foot"; kwon (권, 拳) means "to strike or break with fist"; and do (도, 道) means "way", "method", or "path". Thus, taekwondo may be loosely translated as "the way of the hand and the foot."^[1] The name taekwondo is also written as taekwon-do, tae kwon-do, or tae kwon do by various organizations, based on historical, philosophical, or political^{[citation needed]} reasons. -- http://en.wikipedia.org/wiki/Taekwondo

Tennis is a sport usually played between two players (singles) or between two teams of two players each (doubles). Each player uses a racket that is strung to strike a hollow rubber ball covered with felt over a net into the opponent's court. The object of the game is to play the ball in such a way that the opponent is not able to play a good return.^[1] Tennis is an Olympic sport and is played at all levels of society at all ages. The sport can be played by anyone who can hold a racket, including people in wheelchairs.
http://en.wikipedia.org/wiki/Tennis