When you accidentally write something and send it to the wrong person in a written communication. Most commonly with Instant Messaging, but also in texting and emailing.
Roo: "Dood Shax's mom is hawt."
Shax: "I's gonna stab you's inda jaw!"
Roo: "Woops misstell!"
by Shmalexxxxx April 28, 2009
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