To Self Roleplay is for one person to be roleplaying by themselves due to either having no partner, or setting a story within their mind for themselves, or perhaps they could be lonely.
It seems Timmy is self roleplaying to ignore the outside world.
by Vicinity April 13, 2020
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When someone is so lonely in real life to the point where they act out certain things they've watched or read.
Baymax: On a scale of 1-10, how lonely are you?

Jack: I do alot of self-roleplaying.

Baymax: That means level 15
by Seymour Butte August 19, 2018
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