A pony or other equestrian mammal that one rides when one is in a state of angst, concern, distress or general teenage hormonal difficulty.

When an angst pony is brought out in a discussion or "bitch-fest", it soon becomes an angst rodeo as others bring out their own angst ponies"
Camille: "I need to release my angst pony out into the sunset"

Nora: "Gee, Camille's angst pony is raging tonight!"
by Danielle and Company August 6, 2010
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