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ERP stands for Erotic Role-Play. Role-Play in this definition refers to the typing RP done in video games, chatrooms and forums.

ERP is a role-play with little plot besides the quick sex scene between characters. There is no consequence and no long term story behind it.

ERP is basically RP that is rated X.

The term is often confused with MRP, but it is very different.
by Villanite December 28, 2007
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The sound your stomach makes after eating Arby's for dinner.
"Edwin, I think i feel my stomach erping after that pork sandwich."

"Well Jenny, thats what you get for eating at Arby's"
by JennyDanvers March 09, 2019
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The worst purchase tracking software ever made. It never really works. When you think it does......you've fucked something up.
I'm gonna make a software that should help make tracking purchases but in reality will cause people to not be able to finish their regular work. It shall be called ERP!
by user458237 November 18, 2010
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A variation of the acronym RP (see: roleplaying). This is a form of one-on-one roleplaying performed by two advanced writers usually of the subjects romance, sappy, and melodramatic.
"Hey, can you erp tonight?"

"I need some mad erping, now!"

"Erp with me?"
by Erper February 13, 2007
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A sound usually pertainign to a query, question, or just being used as an incomprehensible noise to confuse others around you
Guy#1: So, did you see that homeless man? I see he is fond of ketchup pakets.
Guy#2: Erp?
by ThatTreeOutside March 28, 2003
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An exclamation used most commonly with a "?" to signify confusion.
Dude#1: Hey man, I went to a farm and spanked every pig there!
Dude#2: Erp?
by Alexei March 19, 2003
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