1.What one would say to another that is acting crazy or doing something foolish.
2.A reply to one who thinks they know it all but yet they are mis-informed.
1. After the man urinated on himself at the podium, a member of the audience stood up to walk out exclaiming, "Man, you be trippen!"
2. John replied "What the fuck you mean by saying the USA has a right to be in Iraq? Man, you be trippen"
