T.O. is such a showboat that he's the reason "Excessive Celebration" is a penalty.
by katie was here July 15, 2009
1. to behave in showy, flamboyant way

2. a showy, flamboyant person
It's his showboat behavior that makes Americans look bad.
by The Return of Light Joker December 15, 2011
a retarded musical
showboat is just plain stupid. i haven't seen it but i know i won't like it.
by coheedpowerx3 March 15, 2009
An attractive boy or group of attractive boys used by a small group of girls for the sole purpose of showing off. The girls don't necessary like to be around the boys they are just there to look cute. This is a female version of arm candy.
Person 1:Man! would you look at those broads with all those cute boys!
Person 2: Aww they ain't nothing but a bunch of showboats.
by G.Keiz February 26, 2007

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