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When a group of Gannon University students procede to "train" a girl. They do this while making train noises, with the "engine" of the train wearing the Knight mascot uniform holding a sword. The girl who is getting "derailed" from behind is shoveling coal to fuel the engine.

There is also the conductor who stands to the side and sells tickets for other students to board the train.

Each member who participates in the GU express receives a punch in their ticket to prove their involvement in the sexual maneuver
DUDE, we totaly gave that chick the GU Express!
by Gannon individual August 25, 2007
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