A variable that one uses to rationalize the classiness of a young female. typically used to rhyme your way into the boys conversation whilst still acting smart.
The class of the lass is directly proportional to the mass of the ass.
by HouseOfWords December 26, 2017
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A big gay ting, dat scored over 9000 positive on every gay test on the internet. If you see him on the street, run immediatley bcs he would probably knock you out and suck your dick. Lasse Biede even fucks his own father
"Damn dat dude is super sus and gay, he must be a Lasse Biede"
by Røvhul February 20, 2019
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Lasse is a little guy, he has small balls and a little dick.
Lasse has no friends, and his family hates him.

He likes to place things in his asshole.
When your name is Lasse you are often very very gay.
by LyngeTheKing March 29, 2022
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that f***ing sexy gal who strips in da pool when everyone is looking and sets up a threesome as regular sex isn't enough.
hiya, look at ur boner, sam. wanna come over and see my sexy ass (as I'm a sex lass). I'll let you play with my nipples and you can compare dicks with grey - my other one. it will be the greatest dick-off ever!

you f***ing sexy lass
by the only one in May 29, 2022
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An attractive Scottish girl with an ass to match.
Person 1: Bonnie has a perfect face, gorgeous red hair and a fantastic behind. Yep, she's a lass with ass.
by Qtw/booty December 28, 2016
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Lasse Syndrome is when you are better than anyone else, especially your friends. A person with the special syndrome, has the ability to fuck everyones girls.
"Omg he has the Lasse syndrome!"
"He is infected with the Lasse Syndrome, watch your pussies! :-("
by Albert Ottenberg December 14, 2016
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When you sometimes get autistic accidents during school time or free time. You could for example just yell "fuck" without a reason. So autism lvl: Lasse is just being mentally challenged.
"Wow you're at the Autism lvl: Lasse" John said to Mick.
"You're autism lvl should be like Lasse, during the last hour of school" Mike said to Bob
by D4t m1xtape m4k3r th0 August 18, 2017
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