Attempt T-Bagging a open Xbox 360 disc drive without the disc drive closing on your nut-sack.
Clayton was really drunk! So Peter dared him to do the Tbox Challenge. As Clayton went to drop his nuts through the whole of the disc drive safely without touching the sides like a game of operation. the disc drive closed and pinched Clayton's nut-sack .
by The Kroulex November 8, 2011
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A sh!tbox car is one that is worn out car that is falling apart, litterally leaving a trail of parts down the highway.

The sonic part comes from the fact that this car is equipped with a fart cannon muffler. the term sonic sh!tbox usually implies that the car is eurotrash.
tom: gee i gotta work on that junk car of mine, dang 500 dollar sway bar bushing is shot
andy: 500 bucks for a sway bar bu...HEY, you have a fart cannon on that Saab?
tom:oh yea, alll these expensive parts means i have no money for a real muffler
andy:yep, that's official, Sonic Sh!tbox
by tghnjolk,mdfe April 4, 2013
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