Originating back in 1500 B.C., P.B.O.M.
L, or otherwise known as
Paige, Bitch Of My Life, was a highly vulgar term used by Arabian cavemen to let their fellow cavemen know that they needed to deficate. Today, P.B.O.M.
L stays true to its original meaning, as it is widely used by 21st century teens for the same reason.