Someone with very long hair that happens to be very long in the back and top, and very short on the sides.
D.O.A and Julius (pre w2z) are mullet boys.
by Julius March 30, 2003
This person is the most amazing human ever, they are a MAN not like these other boys.
Wow he really is a mullet boi”
by KsWiZZel130 September 11, 2020