When someone ejaculates into a cup of water and drinks it.
Guy 1: yo, me and the boys dared Will to do a sperm whale last night
Guy 2: omg eww
by iaminsidebarakobama March 23, 2020
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a fat person who wants to be a whore
person 1: dude, i got with hailey last night

person 2: sorry to break it to you man, but she's a sperm whale

person 1: *starts crying* i thought she felt heavy!
by lulzra roflnig October 31, 2011
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Jeremy bagged himself a Sperm Whale last night at Jared's party.
by NagathaChristie August 4, 2018
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To get a head in a hot tub from a girl with a trachea and when you are cuming you jam your dick down her throat so that when she comes up from under water she blows your load out her trachea like a whales blowhole.
Curtis: Hey man, I made Tracy with the trachea do the "Sperm Whale"!

Nate: No way, "Sperm Whales" are the shit. Almost as good as a blumpkin.
by Tragicmangina August 5, 2014
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1. A Whale that has spermaceti in his head, not sperm

2. A fat man who masturbates for a total of 24 hours in a fortnight (that may not seem like alot but remember that it's a TOTAL of 24hrs. Thats alot) and spews bucket loads of semen
Dave: "Woah! That guy is fat!!"
Bill: "Yeah, but his hands are covered in milk!"
Dave: "Umm... That's not milk, Bill. That's cum"
Bill: "What a Sperm Whale!"
Dave: "Bill, what's that mean, he's a Human!"
Bill: "Oh, it's a word that LemonyStuff invented."
Dave: "Woah, it all makes sense now!"
by LemonyStuff September 4, 2009
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