When one received a blank text message from a friend. Similar to a premature ejaculation, this premature exclamation occurs when they are just so excited to be having a text that they shoot one off prematurely.
"You sent me a blank text."
"Sorry, i got excited and shot out a premature exclamation. I swear, it's never happened to me before. LOL"
Sending of a message (usually text message) that you haven't finished writing, sent due to wrongly pressing the "send" button.
Dad: thanks for the sex
Sorry, premature exclamation. Should have read Dad: thanks for the sextuplet article you sent me, it was really useful for my essay. :)