1 definition by MLIACG

An acronym in which commenters on MLIA have an infinite amount of definitions. If you ask what it means, be prepared for all the answers you will receive.
Person 1: Do you know what OP means?
Person 2: Yeah, it's Orgasmic Platypus.
Person 3: No, it's OctoPie.
Person 4: Really, it's Original Poster.
Persons 2+3: No, they're just trying to screw with you. Believe us, not them.
by MLIACG February 21, 2010
Get the OP mug.