word used to describe someone who stabs his friends in the back. Not to be confused with "Fat Lasse" which is used to describe somone sympatetic to people.
"Lasse" or "Thin Lasse" is someone whom desperately seeks random groups to become the alfa-male of, at any cost.
The worst thing you can be called is "Lasse"
You`re being extremely Lars Ingar today, thats why I dont want to hang out.