M.I.E.S.
An abbreviation commonly used among kids who don't have time to type out "My Mother is Eating My Socks", so, instead, kids use MIES- Mother Is Eating Socks.
Kid 1:So, what are you doing?
Kid 2: Brb
Kid 2: OMG I'm back!! M.I.E.S.!
Kid 1: No way! WTF!?!
Kid 2: Brb
Kid 2: OMG I'm back!! M.I.E.S.!
Kid 1: No way! WTF!?!