What is Ichtst?
1.
Acronym for "I Came Here To Say This/That"
As it states, you had something witty to say on a web forum, and someone stole your thunder and said it before you had a chance.
O.P.: Check out this fish I caught!
Reply 1: I've seen bigger.
Reply 2: That's what she said.
Reply 3: ICHTST ^^
See