A commonly used DeviantArt daMN term colloquially used to describe an effective way of addressing the username without typing it out. It is more commonly used addressing the wrong user however.
~kitty9390: It's a pain typing out your username.
=Senor-Captain-Red-Wing29387: Just type "Se" and hit tab.
** `SeeMyHeartBleedBlack288 has entered **
~kitty9390: SeeMyHeartBleedBlack288: Thanks. XD
~kitty9390: Blargh?! I got tab-pwned! D<
None of the actual usernames exist...at least not to my knowledge. Anything else is completely coincidental and unintentional.