An acronym for "Wrong
Person". When someone says something to another
person, but at the time, did not notice that they were talking to someone else, who they didn't
mean to speak to. Often used in instant messengers.
"An example situation in an instant messaging room:"
SomeGuy: Hey, remember when I laughed at that
guy with the giant
tumor on his head?
SomeChick:
Umm, what?!
SomeGuy: Sorry, WP.