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A person who behaves with exaggerated phoniness in social situations. Can be a noun, adj. or verb.
"I hate parties because I get sick of having to Smilin' Dave for hours."

"I freaked out and had to leave because I got accosted by five Smilin' Daves trying to get me to take the Scientology test."

by DaniCalifornia October 09, 2007
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