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1.
mlp
My Little PonyCollector's term for small plastic horses with brushable manes and tails.
I often go on the MLP trading post.
by Fluttershy April 21, 2005
 
2.
MLP
An acronym for "Matt Loves Penis"
Matt's dong is being drippy today so i wrote MLP in the elevator.
by Blake Ressler May 24, 2008
 
3.
mlp
Maltese Labour party, a political party in Malta full of close-minded people.
Why are you mlp?
Because that's what my family always was!
by rainyday June 14, 2008
 
4.
MLP
To send someone off or make go away - change the channel to something else less interesting like My Little Pony (MLP).
Why don't you just go MLP - I've just been MLP'd -

Relevent to the MMO community as seen on thedailyblink.com "go-away-were-playing-wow"
by davidaimworst April 27, 2011
 
5.
MLP
Major League Pimpin'

- Those that are the best at pulling girlies.
You: "I was at school my dude, this girl started talking to me in class, and offered up her number."

Friend: "That's awesome, you are definitely MLP!"
by antjamram November 02, 2012
 
6.
MLP
Meaning "Me la Pelas" in Spanish ... Often translated to "suck it". Refering to an action where you have beaten someone else in something and your mockin him. The short-term "M.L.P." is often use texting or while chating.
Mia: You cheated in the game!
Ricardo: No! You just suck. Me la pelas!
Mia: you dirty little hamster!

or
Reynaldo: I hate you so much!
Ricardo: MLP!
by ronal108 April 08, 2011
 
7.
mlp
Mindless link propagation; as this definition implies, MLP is the aimless or casual sharing of links to websites.
Anne, bored at work, sent Bob an email full of MLP.
by pwolffe October 10, 2005