Noun. (Perjorative) A sexually promiscuous woman who has multiple sequential partners, typically in a single night, which leaves her vagina full of semen.
"'Didn't that sperm bucket's mama ever teach her about a douche bag?' Gerald asked himself. 'She probably got one for Xmas from her Auntie Hoe and clutches it to her tits on a cold night as a hotwater bottle.'"

-- Jay McInerney, "The Shrike" (short-story, 1983)
by Tummy Augratin August 14, 2006
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A person who takes more shots to the face than 50 cent and jenna jameson... in the same day.
man, i was with whitney last night...she a sperm bucket
by darian v. July 31, 2007
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