To try hard at something you really suck at.
Connor: Look at that kid over there choasting at basketball!
Ben: Hahahahahaha! Yeah he blows, but is trying way too hard! What a choaster.
by Thompsoner November 22, 2013
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Slang for the all time favourite stoner food: cheese on toast.

Not to be confused with 'Shoast', a joke spawned from the mispronounciation of 'Choast'.
I'm hungry, I think I'll make sum choast..
by ttoonnyy3 April 21, 2009
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