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1.
The act of Ejaculation performed so the expelled seman lands on a stone.
"EER this rock is slimey someone must have Mcdermincated on it"

" Dude pass me that rock i need to Mcdermicate, i love Mcdermication "
by James Chadwick July 10, 2008
27 6

Words related to Mcdermication:

eer mcdermincatoon rock sperm wank