You are a classic hard head. Lighten up!I'm not really a hard head. You bring out the worst in me.
hard head
noun a criminal who uses explosives to break into safes US, 1949
a hard head
Someone who is inflexible or stubborn; someone who tends to be overly willful or obstinate. Our son is such a hard head. Once he's made up his mind about something, there's no way anyone can change it!
hard head
n. a stubborn person. I’m not really a hard head. You bring out the worst in me.