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A G-Pony is a pony from the animated series My Little Pony: Friendship is Magic who is described as gangsta, awesome, cool, or just plain epic.
Jack: Hey brony Fluttershy is a G-Pony.
Adam: Yeah man she's pretty boss.
by The G-Train January 05, 2012
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G-pony is a true gangsta and usually a member of the 6am drinking club.
Girl: damn I can't believe we stayed up playing beer pong until 6am again...
Guy: I know were some f***ing g-pony's
by pong princess June 10, 2010
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