An acronym standing for hydra trash party, commonly used as a tag for fanfiction exhibiting dub-con, non-con, and the darker side of fanfictions.
Them term was origanlly brought to life on tumblr, a multi-blogging platform commonly used for fandom works.
Last night i read a htp fic recced by my tumblr father .

Did you read the htp fic where rumlow removed bucky's arm and legs?

I wish i had never read that htp fic.
by Thegrace January 1, 2017
Get the HTP mug.
It’s a specific slang among people who live in Shiraz. The most beautiful and amazing city in Iran. It means you don’t do something in the last year. However, you are doing it now.
Hotan: I’m going to fishing this weekend, are you down?
Mammad: HTP, hell yeah bro!
by Mamadkzzz August 25, 2019
Get the HTP mug.
Internet short hand for “have to poop
Holly crap! I’m prairie doggin,I HTP”
by Moe Fizz May 8, 2006
Get the HTP mug.
a ancronym that stands for "hack the planet" based on the '94 movie "Hackers" with Jo-lee
yo, peace, and HTP!!!
by Andy the Longshot November 20, 2003
Get the HTP mug.
Here To Play
The party starts at noon on Sunday. Please bring the booze of your choice and an HTP attitude.
by kuhnap August 30, 2010
Get the HTP mug.
HTP is an acronym for “Hit The Pen”, as in let’s smoke from the weed pen or let’s hit the weed pen
Hey bro, let’s HTP tonight.
by rockhardrock May 19, 2019
Get the HTP mug.
5-HTP (5-hydroxytryptophan) is the direct precursor to serotonin. It is used as therapy for some forms of depression.

Users of the party drug MDMA may are advised to take 5-HTP supplements to ease the effect of serotonin depletion caused by MDMA. Many MDMA users take 5-HTP to try to enhance their high.
5-HTP is the direct precursor to serotonin.
by fu March 30, 2003
Get the 5-HTP mug.