"Jebem ti mater" is a sentence by which a Balkan mother expresses her love for a child. When Balkan moms are angry, they run around the house after the child with a slap in the hand and shout: "JEBEM TI MATER!" Even tho that means "fuck you motherfucker" she uses it anyway.
Mom: hi son,what grade did you get from the math test?
