To experience premature e-textulation is to accidentally send a text message or comment via phone or social network, before the text/comment is complete.
when your having "Hot" phone sex with your girlfriend/boyfriend by sending pictures or explicit sexual fantasies with each other and you cum before your partner does.
My girl is mad because I was having some awesome cell phone sex with last night and had a Premature E textulation.
When you are texting someone and hit "send" accidentally before actually writing anything. Subsequently sending a blank text. Using this phase completely absolves your texting incompetence.
George: Hey Gina
Gina:
George: Uh, you sent a blank text.
Gina: Sorry George my phone has premature etextulation.
It's when you are texting someone and you accidentally send the text before you're done writing it.
I just got a text from someone that ended in the middle of a sentence. He must have had a premature etextulation because he sent the end of the sentence in another text.