Muzzwaa
A term meaning to swipe a poo finger on a victims top lip creating a pooey mustache, often used in schools and situations to amuse and humiliate.
Boy: Hi Wendy, how've you been since we split?
Girl: Fine, I really mi...
Boy: MUZZWAA you villain!
Girl: Fine, I really mi...
Boy: MUZZWAA you villain!