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To try sexual activities with another man for the first time, to see if you like it or not.

Either Making Out, Hand Job, Blow Job, or Sex.

Doesn't make you gay, just adventurous.
I had been thinking about it for a while, and decided to have a ManTrial yesterday. I have to say, I like women more.
by ExpertEntrepreneur August 03, 2011
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Jul 29 Word of the Day
Someone who used to be a potential girlfriend/boyfriend, but no longer is.
Tim: Zack, is that your exgirlfriend?
Zack: No, she's an expotential. We never actually dated...
by brownsuite September 24, 2011
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