any cardio machine that is used in any gym facility at West Point (U.S.M.A) that is used by an over-weight or chunky female cadet, called a trou or trouser.
THe cadet ran on th trou chariot to get a good cardio workout.
(v.)- This occurs when one takes a dump and it shoots right out of the anus like a rocket and sinks to the bottom of the toilet bowl, hence the term "scuba." One usually does not have to wipe after this furious anal blast because the exit was so clean.
Your poop scuba dives to the bottom of the toilet bowl and there is no need to wipe, hense Scuba-Shit.