1 definition by Rajesh22437

A girl that only has had sex with one person and does not want to partake in sex with anyone else much like Lilly in the popular Tv show how i met your mother.
guy 1 " wow, thats a hot chick. i wanna tap that"

guy 2 " good luck mate. She's pulling a Lilly
by Rajesh22437 June 21, 2011
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