When bros go on a walk to talk about stuff. Usually it is about chicks, but it depending on events that has happened recently. It is considered a sacred event.
Bro 1: Guess who’s house I was at yesterday?
Bro 2: Dude, we need to go on a man walk.
man walk: define #2
Walking around aimlessly with someone you care about talking about something deep!
I found out crucial information, and was in need of a manwalk.