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noun someone usually male who has multiple STDs and STIs, due to side effects of experiencing the fealing of pins in ones genital area. Very offensive and obscene use caution while in public.
Jessica: did you smosh with that juice head

Nicole:No way he is such a pin bag.
by Jay Awhat June 30, 2011
A person with little little balls.
"Way to go, pinbag. Now she's off with that guy."
by Jesse Gold February 15, 2006