Top Definition
Horny Prostitute Syndrome, an illness that most white girls suffer from from the ages of 13-24, they begin to think that they are hott while dancing because guys are staring at them( because they dance weird, not that they're good or anything)
The world isn't ready for unnecisary HPS maybe when your older
by HottbloodGirlAFDreamz March 23, 2005
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Homework Paralysis Syndrome

Occurs when you just cant do your homework. It's not the fact that your homework is hard, its just the fact that you're too lazy to do it.
Guy 1: I have a lot of homework to do
Friend: So why dont you do it?...
Guy:I have hps
Friend: oh, that makes sense
by Viewtiful Bro November 15, 2005
The abbreviation for a type of bulb know as "High Pressure Sodium". It is well-known in horticultural groups. Especially cannabis growers because he spectrum it emits is perfect for use during the flowering cycle of cannabis plants
"My Afghani has been flowering for 4 weeks under a 400w HPS."
by Narcissus July 13, 2004
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