A word to show people they should be ashamed. Especially for something extrememly stupid like urban dictionary not accepting a definition. Also it's better to use two tisks or three tisks than one tisk.
Dude: Dang urban dictionary wont accept my definition...Tisk.
Girl: Tisk Tisk...tisk do better in three.
Dude: My tisk is strong enough to stand alone.
A variation of "tsk" used by people who don't REALLY know how to spell and are unaware that not every word is spelled phonetically.
"TISK at my Wal-mart brand keyboard, with my husband's slime on it, for making a typo."