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1.
Another name for a man's Penis used to show that it is rather large.

Can also be used as a verb to describe sex.
Noun:
Man my deaser is so hard right now thinking about her.

Verb:
Larry: How was your date last night with Martha?
Jimmy: It was great I ended up deasing her in the parking lot behind the movie theater.
by littlehuman October 19, 2012