In layman's terms, it's when you perform a quick attack to put the opponent in block stun then immediately throw them. Everyone has them in this game, usually in the form of D1~throw or D3~throw. Some work better than others, with the ones at or close to 0 on block working the best. Baraka's are pretty good since D1 is -3 and D3 is -4 on block. He also has a command grab in his one variation which allows you to cancel any string into it, so even standing 1~bf2 would be considered a tick throw.