The word tz is a state of mind oftenly used when someone has been sitting several hours in front of a screen.
Man, i watched 2 hours of mature porn last night. I was totally tz
1) not really of or pertaining to meaning; a phonetic expression of the sound the teeth 'n tongue make.
2) can be applied anytime for any chat; a playful pause and/or interjection
1) ah! tz, sure let's go.
2)tz, heh :))