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1.
adj.

When something is so good you could jank to it.

Also, a really amazing masterbatory session.
Christ, you see that short skirt? Bitch be mastastic son!

I know, I had a mastastic jank sess to her the other night, I'm still sore!
by jimmy patrick February 19, 2008

Words related to mastastic

jank masterbatory fantastic masterbation sexytime