Urban Dictionary: Definitions by Kevin McKinney

Tism attack

When someone makes a stupid mistake, and then beats their hand on their chest and makes a screeching noise

Hunter had a tism attack in math today when he said two plus two equals five.

The act of doing something stupid and making a screeching noise while beating your hand against your chest in a rapid manner.

Hunter had a tism attack during math today after he said 2 plus 2 was 11

When John went to go check the jello he was making, he found that it was not yet solid, but not a liquid anymore at the same time, so it was a siquid