SP

Short for Standard Practice. Often used as a reply by an individual to another who has told a story or described what they have recently done which is deemed as "standard practice". Is often used sarcastically.

John- " I was wasted last night"
Paul- "SP"

by LarryB1234 July 19, 2010

sp

'Suppressive Person' as coined by self-proclaimed Scientologist, Tom Cruise in the ever increasingly popular interview seen on youtube where he can not control his laughter and brags about stopping to help people who are in accidents along the highway.

"They said: 'so, like... have you met an SP?'" <cackling laughs> "And I looked at them and...You know..."
"And I thought how what a beautiful thing because maybe one day it will be like that. You know what I'm saying? Maybe one day it will be that..." <can't control his laughs> "Wow, SPs, like, they'll just read about those in the history books, you know." --Tom Cruise

by d00db0x January 17, 2008

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*

by EmCasey'97 June 23, 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????

by Aristophanes October 2, 2005

SP

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

Ask Dr. Hagan.

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.

by Zig April 3, 2003

SPS

Skinny pants syndrome.

Those pants were so tight, i feel like i have SPS!

by SPSexpert March 15, 2010