1 definition by sydmonster

Incredibly deep anal penetration, typically performed by a man with an abnormally long penis that is able to stimulate the woman's (or man's) jejunum in the small intestine.
Man: Hey baby, you up for some jejunumal sex??
Woman: Oh hell yeah baby, I love feeling you that deep in my ass ;)
by sydmonster July 6, 2010
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