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When someone is acting so stupid and flighty that you can't simply call them "gay"
"Hey, Tim, watch me stick these straws up my nose!"

"Mark, you're gay and a half!"
by princess daisy of daupins April 07, 2006
Really really gay.
Those pink socks are Gay-and-a-half.
by Shamsael April 12, 2003
When something is just to stupid that gay won't suffice.
Last nights party was gay and a half
by welkatelk January 09, 2010