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When you accidentally hit send on a Tweet before you are finished your thought/reply; getting overly excited and Tweeting too quickly.
"Dude. That Tweet made no sense."
"Sorry: I hit send before I was finished."
"HA! Premature tweetjaculation!
by Chibi Jeeb October 24, 2011
When you send off a tweet before reading it, and you regret it later.
Dude, I had a premature tweetjaculation last night when I was drunk off my ass.
by Poopsie88 December 08, 2011