Definitions by GodIsDead-

jag knullar din mamma 

Swedish for "I'm fucking your mother". Not literally ofcourse. mostly. It's more likely to be used as an insult instead of being a statement.

Guy: Jag knullar din mamma!!
Me: Då är vi kvitt.

jag knullar din mamma by GodIsDead- January 25, 2017