A person who
literally can't shut the fuck up.
Like, geez
guy, take a breath. Also he will interrupt you to say something, probably something you were going to say, or to try and contradict your point before you finish it
Guy 1: Hey so the other day I went to the mall to buy...
Manwell: You're joking, you went to the mall? Everything is cheaper online. Why would you go to the mall?
Guy 1: ...
something from the store my friend just opened.
Manwell: How was I supposed to know that?
Guy 2:
Maybe if you weren't such a Manwell and you didn't interrupt
us all the time you would know.