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1.
The stylistic and wealthy art of giving your partner three Dutch ovens, followed immediately by taking a Cleveland steamer in your partner's eyes, and squishing the shit back and forth, up and down between his/her eyelids.

Not to be confused with the Japanese term "Dekimashita", which means "Finished". "Deckermushita" is pronounced Deh-ker-mush-tuh.
Bro 1: Dude, I gave your mom fourteen deckermushitas last wednesday.

Bro 2: FUCK, HOW DO YOU HAVE THAT MUCH SHIT?
by GaveYerMomADeckermushita May 12, 2011