Top definition
An unknown species of animal/bug/rodent found only within the vicinity of Union Pacific Rail Road Newly Hired trainmen and trainwoman. Attacks occur only when probationary period of employment (OJT) is still in effect.
As the new hire went back 23 cars to change a knuckle out, a Waspacat came up and bit the new hire right on the ass.
by "Quick Draw" SPC July 16, 2008
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