Stands for Miss Little Perfect. The most annoying girl ever known in history and portrays herself as hard to get yet  has never been sexually active with a boy or close at all. She is in love with herself when no one else in this world likes her. She thinks she is beautiful and stares at herself in the mirror all day naked.
Asian: OMG Blondie, stop being such an MLP
Blondie: Sorry but that is the most disgusting thing i have heard in my entire life.
Blondie: Sorry but that is the most disgusting thing i have heard in my entire life.
by Asian and Blondie June 21, 2008
 Get the MLPmug.
Get the MLPmug. by Fluttershy April 21, 2005
 Get the mlpmug.
Get the mlpmug. A board on 4chan dedicated to discussion about, and things related to, the television show "My Little Pony: Friendship is Magic". Created by head admin moot after pony-related posts were cluttering up the /co/ and /b/ boards.
by Dogman15 July 20, 2013
 Get the /mlp/mug.
Get the /mlp/mug. "My Lord and Personal Savior"... no religious meaning other than to point out that someone is, in the speaker's opinion, a god.
by Snowlepp April 1, 2015
 Get the MLPSmug.
Get the MLPSmug. by Alfred James August 2, 2007
 Get the mlpmug.
Get the mlpmug. by rainyday June 14, 2008
 Get the mlpmug.
Get the mlpmug. Mindless link propagation; as this definition implies, MLP is the aimless or casual sharing of links to websites.
by pwolffe October 10, 2005
 Get the mlpmug.
Get the mlpmug.