Top Definition
A man who forces someone to give him oral sex. Comes from Catullus, the best of ancient Roman poets, who uses this word to describe a government official in poem 10.
Stay away from John; he's such an irrumator. Last time Susan slept with him, she could hardly talk the next day because her throat was so sore.
by Super Sara November 07, 2005

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The latin word describing a man sucking another mans penis. This was considered the lowest form of sex by the Romans. A man having his penis sucked was a fellator.
Lucius Pipinna is such an irrumator.
by Cookie1456 October 21, 2007

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