Bad Temper

Bad Temper is one of Fallout GURPS disadvantages. See: Fallout GURPS.

Overview
"You are not in full control of your emotions. In any stressful situation, you must make a Will roll. A failed roll means you lose your temper, and must insult, attack or otherwise act against the cause of the stress."

- Steve Jackson Games GURPS sources

In Fallout
With the abandonment of GURPS, Bad Temper was removed from the game