sp 

Abbrevation of
1. South Park
2. Service Pack

Did you install sp2 to Windows XP? :)

sp by Visor December 8, 2003

sp 

Miscreant speak for the Emu SP1200 drum machine/sampler. The SP1200 and its smaller counterpart, the SP12 are vital tools in the science of hip-hop. The SP line is famous for its gritty sample rate and its ease of programming.

Yo, that kid has mad skills on the SP.

sp by Tommy B. May 22, 2005

SP 

U.S. Navy Shore Patrol.

Chief, put your dick back in your pants, the SP is coming.

SP by harry flashman July 24, 2003

sp 

gameboy SP

its like a gba, but its screen flips up like a cell phone, and it has a backlight

basically, its for all of us who play gameboy during pe..

dude, leme play juur sp

sp by Hellbourne May 13, 2005

SP 

An acronym for Smashing Pumpkins, sometimes written inside the shape of a heart

SP fans can now breathe a breath of fresh air with the release of Zeitgeist, the first Smashing Pumpkins album in 7 years.

SP by tarotkid August 5, 2007

SP 

Stanky Pussy.
A person who is a slut, who happens to have a foul-smelling vagina.

Man, that chick fucked her brother, she's such an SP.

SP by Cami March 13, 2005

SP 

South Pasadena, CA. The suberb of the city Pasadena. It is known for it's ostriches and it's ancient Rialto theatre.
It has been featured in movies such as "Bringing Down The House" and "Sleepover".

"You go to SP?"
"Yeah dawg, home of the tigers!"

SP by asdjkl September 12, 2008