The Brits often use ‘’bonkers’’ to mean ‘’crazy’’ or ‘’bad’’. “Mad’’ is another word they’ll use to mean ‘’crazy’’, as in “Are you mad?!’’.
Americans seldom ever use ‘’mad’’ to mean ‘’crazy’’.
When we say ‘’mad’’ it means just that.We’re upset, pissed off or angry.
Not really. Dogs get mad. People get angry. I’ve never use used mad to describe angry.