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One's penis. Usually refering to one's penis that is larger in size than the adverge fellow.
1)Julie seems to really admire Samuel's longfellow.

2)Stephen's longfellow petruded outwards greatly from his slacks, and everyone at the party seemed to notice.
by Giordan D April 12, 2006
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if idiots could fly, this place would be an airport
person 1: what school do you go to?
person 2: longfellow
person 3: fucking narc
by Litle litle louoooo June 13, 2018
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