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1.
When you are such a flirt other people catch it...its like a yawn...you start flirting and then everyone else does to...most likely with hott kids. its a cold..evryone gets it!
girl: i never flirt cause i i have a boyfriend, but alex makes me flirt soo much
girl2:i no! its cause he is flirtagious...
by magenta xx April 20, 2006
 
2.
Adjective. A trait above and beyond simply being flirtatious. Specifically, when someone's flirtatiousness becomes contagious.
That Jack is flirtagious! Either that or the beer is making me flirtatious tonight.
by EZH November 26, 2005