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.
SomeGuy: Hey, remember when I laughed at that guy with the giant tumor on his head?
SomeChick: Umm, what?!
SomeGuy: Sorry, WP.
by NinjaSilver October 23, 2007
Get the WPmug. The most gangster sons of bitches in the entire fucking land. They are also the most leet badass mother fuckers as well.
by Jesus Christ November 29, 2004
Get the The WPmug. by ShortcakeSempai March 3, 2018
Get the WPmug. 
Abbreviation for White Phosphorous.
Type of grenade used extensively during the Vietnam War. Upon detination, white phosphorous is spread over a wide area. While often used offensively, it's most prolific use was with tank, aircraft and helicopter crews. Upon the eventuality that they had to abandon their vehicle, they would detonate a WP grenade on equipment they did not want to fall into enemy hands.
White phosphorous is a particularly horrific weapon due to the fact that phosphorous reacts violently with water, thus any attempts at extinguishing the fire would result in it getting worse.
Troops were uneasy about using WP as it is very unpredictable and it has a high spread radius.
The radio designation for White Phosphorous is Willie Pete.
Type of grenade used extensively during the Vietnam War. Upon detination, white phosphorous is spread over a wide area. While often used offensively, it's most prolific use was with tank, aircraft and helicopter crews. Upon the eventuality that they had to abandon their vehicle, they would detonate a WP grenade on equipment they did not want to fall into enemy hands.
White phosphorous is a particularly horrific weapon due to the fact that phosphorous reacts violently with water, thus any attempts at extinguishing the fire would result in it getting worse.
Troops were uneasy about using WP as it is very unpredictable and it has a high spread radius.
The radio designation for White Phosphorous is Willie Pete.
Better bring a few Willie Petes for this fire mission Bill, we don't wan't Charlie getting his hands on these XM16's...
by M1969 January 20, 2005
Get the WPmug. Abbreviation for: Wrong person. Often used on online games and MSN when talking to friends in private and you message a person u weren't meaning to.
by Kayr33m May 31, 2007
Get the wpmug.