abbreviation of the term "suck my left one", usually followed up by an exclamation mark, or a bitchslap if offline. this is to be said when someone makes a ridiculous comment or insults you in a banterous way.
by baddamanfo'lyffeerudeboii March 31, 2010
Smiling my lips off. There can be other variations such as SMFLO = smiling my fucking lips off. Quite frankly not everyone laughs
My friend Stephen sent me a joke in an instant message. Although it was not humorous enough for me to laugh my ass off LMAO, I did SMLO.
by Reggaechamp May 8, 2011
by Dreamer_* May 23, 2010
An abbreviation for "screaming my lungs out" usually referring to a genre of music such as death metal or any heavy screaming
by madimadimadimadi December 4, 2021