When you send somebody a message over AOL Instant Messenger (or other IM service), and it causes them to send half of what they were in the middle of typing to you in a message. Also used to describe when the "your buddy is typing" indicator comes up immediately upon sending a message, meaning that the text typed in the IM box is not really for you.

A person who doesn't realize they are transgender yet, or is in denial; an undeveloped transgender person. When they realize, it's referred to as the "egg cracking."