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Derives from the term "thomas the tank engine" but applied to a certain dandruffed overweight no-mum "thomas the wank engine" is appropiate as it describes hes dirty habitit of playing with hes choad. if u are unsure of this other term look it up. CHOAD
i wouldnt mind choo choo-ing on jackies clit and emptying my tank load on her engine.
by thomas johnson June 12, 2003
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