An incestuous father with great and powerful butt-lust in regards to his son.

or

An inter-dimensional sex toy.
Person 1: "That dude's a mosit."
Person 2: "Call Chris Hansen."

Person 1: "I used a mosit last night"
Person 2: "Which dimension did it end up in?"
by masterblaster69 October 22, 2013
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An interdimensional sex toy derived from the word moist.
I was looking for Doctor Who when suddenly he whipped out a mosit!
by buttocksman February 20, 2014
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when I come home from the bar and come through the front door I gravite to the hot wet pussy waiting for me with my fleshtone heat seeking mositer missile.
by norcojsin January 1, 2012
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When something is more than moist, it becomes mosit. This is an exaggeration of moist level.
That girl was absolutely mosit mate!
by mymumabusesourdoghelp May 4, 2020
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