Hothead

[Marquetta]

in the [Caribbean] the definition of hothead is one who gets really angry, pissed or [agitated] very quickly and easily and if [messed] around with or you pick trouble with is ready for any thing(like fights)

[Jessica]

someone who does things or reacts to things quickly and without thinking carefully first

[Merna]

A person who is impetuous or who easily becomes angry and violent.