Guy: What's tht?
Me: You mean what's that? Are you really too lazy to type one extra letter?
Or a event that goes very bad.
Also referred to a crap movie.
Abbreviation from the feature film 'The Human Test' the biggest movie failure since Citizen Kane.
Mostly used in the UK where the movie has been made.
I tried a move on that girl yesterday, was fine at the beginning but turned THT when she saw me naked.
Oh dear that movie was a copy-cat of THT.