Chatspeak for "Holy shit that's funny". Comparable to LOL, LMAO or ROFL
Joke Teller: Redneck word of the day - Obama. "I bought me a case of beer and drank it Obama self."

Listener: HSTF!
by kjgee October 27, 2010
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In Romanian terms, HSTF means "hai sa te fut"
coaie te iubesc hstf <3
by GSJC February 26, 2022
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