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an individual who is extremely horny and would go to great lenghts to satifisfy this hornyness. examples include, pretending to be friends with the person that he or she wants to get with to spreading peanut butter all over his testicles and have a dog lick it off.
shees...you are such a marwhal sometimes! calm down.

who's that guy who keeps texting you? oh it's some marwhal that dont leave me alone.

those marwhals are always trying to hump people..i am tired of it.
by deftonesfan6 October 24, 2010
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