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1.
Too High To Care

when you dont care about anything because you are too stoned
man1: dawg ur house is on fire

man2: dude... im THTC
by Lara Newman June 28, 2008
 
2.
Too High to Communicate. When you're trying to text a friend but you're too high to form a full sentence or explanation.
-"What's up?"
-"THTC"
-"Okay. ill ttyl"
by Tarindactyl September 28, 2014
 
3.
Short form for "Too happy to care"

Alternatively, 2H2C
Jim: Hey Charlie, youre kind of a dick
Charlie: I'm THTC

Megan: That bitch stole my boyfriend!
Jen: Sorry, im thtc
by BiznarBoi May 01, 2010
 
4.
A shortened version of saying Too Horny to Care.
1st guy-Dude that bitch made me so THTC
2nd person- What?

1st guy- To horny to care
by Milve August 21, 2011