1 definition by iambutamessenger

n.) a guy partakes in the act of checking out or going out with women who are much younger than themselves
v.) the act of checking out, going out with, or tapping a woman much younger than himself
" That dude is such a rex. He was checkin out that 14 year old and he's like what 18?"
" Man, I almost pulled a rex. Its a good thing he told me she was his friends little sister."
by iambutamessenger June 22, 2003
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