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Smeg, smegma, the shit that builds under the foreskin when you don't wash it. Only a problem for dudes with a foreskin. Though all guys need to keep it clean.
Clint has a nasty case of dick dirt, his hoe nearly choked it was like a grilled cheese under there.
by Danobobano October 18, 2005
when u did not wash ur dick for so long it gathers dirt and it looks really nasty
wash ur dick or else u get dick dirt
-Barrack Obama
by dick the big dicked duck March 24, 2013
the underwear cheese found under the helmet of your dick
its pretty bad when your dickdirt
by sam January 10, 2004