A noise that fat people make once in a while or while they are eating.
Average Sized Guy: Hey dude, can you pass the mashed potatoes?

Fat Guy: *Chewing* Ah'em! Merp! No.
by SupersizedWithADietSoda February 7, 2010
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A name given to people who are extremely energetic and also randy: A Massivley Energetic Randy Person!
Girlfriend's Friend: Why's your boyfriend running around the garden with a boner?

Girlfriend: We didn't have sex last night, so he's a MERP

Girlfirend's Friend: Ahhh I see

Girlfriend: After he's run around for a bit, i'll give him some lube and he'll be fixed after a few minutes in the bathroom.
by 'shwar January 3, 2011
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Mutually Exclusive Relationship Person - Someone you are seeing but no labels have been established yet.
Jen: So how's your boyfriend?

Sarah: He's not my boyfriend yet, he's just my MERP for now.

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Ken: Dude, how's your girlfriend doing?

Alex: Yo she's not my girlfriend yet, she might be soon. For now, we're just MERPs.
by dvhendford November 20, 2011
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1. what rebel baby dinos say instead of rawr
2. what confused chicks say instead of meep or cheep
3. an alternative to mergh, which sounds horrid when said out loud
1. average baby dino: rawr

rebel baby dino: *smirks and rolls eyes* merp

2. hen: cheep.

chick: merp?

hen: cheep!

chick: merp!

hen: C-H-E-E-P!!!

chick: merp?

hen: *facepalm*

3. person 1: hey, wanna go see the jonas brother's concert with me?

person 2: merp... you're kidding, right?

person 1: ...
by immaNINJAandyou'renot October 24, 2010
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The ship name for Michael and Derp, truly one of the best.
"Merp is the best otp!"
by MicroZoft VA August 24, 2022
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THE BEST WORD, usually spoken in tater tot, tater tot is an immortal, no legged, intergalactic cat.
"bean always says merp when talking to totty"
by Tater Tot 12495 September 20, 2019
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