when a man ejaculates onto the breasts of a female sex partner
When he knew he was about to cum he pointed his dick right at her huge tits. They both knew a chestnut was imminent.
by Marchel March 19, 2013
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When a guy puts his balls in between a girls chest, while she massages it. Hence the name CHEST...NUT
Duuuudddee her tits are so big, she's gunna give me a chestnut
by glopmon123 May 31, 2011
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The most legendary man in the history of the world.

BM: Man, did you see Chestnut down that extra large steeped tea?

BB: Yeah, Chestnut is such a legend
by Chestor_Is_A_Legend May 4, 2008
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When a man vigorously rubs his sack in between a woman's tits.
I chestnuted your mom last night in bed.
by Sergeant poon May 25, 2005
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Term used to describe a sexy woman with blond hair and brown eyes
SWM seeks hot, sexy female chestnut for an intimate encounter
by BadBrad L November 27, 2007
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Basically a pearl necklace, or the act of a man ejaculating on a woman (or I suppose a man's) chest and neck. It derives from the term nut refering to the act of ejaculation and the location of the chest, thus: chestnut.
Hey honey, if you won't give me a blowjob, can I give you a chestnut?
by J. M. E. January 29, 2006
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