Sucessfully impersonates someone while text messaging. Done by texting something that the person might say in a given situation.

Used to mock or put down.
John's text: Stop textersonating my mom.

Bill's text: John's mom: Oh Bill U R just mad
BC Bill is gonna B your new daddy.

John's text: U R such a dick
by jdmill8 May 13, 2007
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A person who pretends they are someone else via text message. For instance: Picking up your boyfriend's cell phone and texting someone from his phone, as if you ARE the boyfriend.

Responding to a text message that wasn't meant for you as if you are the person it was meant for.
I thought I was texting Jim last night, but I found out it was actually Sally. What a textersonator, I'll never trust her again.
by Cassam September 4, 2010
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