sp 

To self promote. eg, your tumblr on tumblrplug. or your qooh.me on facebook. could be used for 'self-promotion'

(on facebook)
Leah - CHECK OUT MY QOOH.ME, i answer everything! go on!!! - qooh.me/l50
Pat - Bitch, stop with the sp it's clogging up my news feed..
------ 10 MINS LATER -------
Leah - sorry for the sp but follow my twitter! go go go
Pat - *sighs*

sp by EmCasey'97 June 26, 2012

sp 

An abbreviation used online by those who are too lazy to check the spelling of a word. Frequently accompanied by use of "ur" and other such marks of idiocy. Several dozen question marks may also follow.

Y r u typng (sp???????????) leik this????

sp by Aristophanes October 2, 2005

SP 

A hybrid molecular orbital containing a carbon-carbon triple bond. Linear.

Ask Dr. Hagan.

SP by H. Tim Smith December 12, 2003

SP 

Standard Pressure; 760 torr, 14.7 psi, etc.

Charles' Law works as long as the setup remains at SP.

SP by Zig April 2, 2003

SP 

slam piece.. someone who is ugly or who is just a hook up.. no feelings attached.. just sex

I was drunk, you were just a hookup.. strictly a SP

SP by walgreensbitchh November 21, 2011

SP 

Seed Point or bonus point (use in torrent sites)

If your ratio is too low, use your SP (seed points) to buy uploads.

SP by Gensyl December 30, 2013

SP 

Short for the term "Sexual Predator" but typically used more to describe:
1) Adult males that behave overly aggressive towards the opposite sex.
2) Men with creepy appearances that tend to stare at girls much younger than them or act in a creepy manner towards females.
3)Any act of preying on members of the opposite sex in hopes of sexual gratification.

That old creepy guy at the bar is so "SP".

Wow SP!... Are you staring at that chicks ass?

That guy with the video camara at the wet t-shirt contest was "SP".

SP by Georgia St. Crew April 10, 2008