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.

Expressing confusion or demonstrating your presence.

The sound your stomach makes after eating Arby's for dinner.

The worst purchase tracking software ever made. It never really works. When you think it does......you've fucked something up.

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.

A sound usually pertainign to a query, question, or just being used as an incomprehensible noise to confuse others around you

An exclamation used most commonly with a "?" to signify confusion.