A bro who likes to hug other bros.
"Dude, Kyle can't stop hugging me. I think he's a broa constrictor."
A bro who incessantly takes all the fun out of brotivities and totally ignores brotocol.
David: "Man this club is totally brotastic lets go play ice hockey on the dance floor wit da ladies"
Brandon: "Nah that's gay we should go read a book without any ladies"
David: "Quit bein such a broa constrictor!"