The most intense level of fucked up that a person can get; when a person is so savage that he/she goes beast mode on everything in sight.
-Did you see Josh last night? He punched the wall and was threatening everyone.
-Yeah, man. He was pretty riffed up.
-Yeah, man. He was pretty riffed up.
by bigdaddyfrat6969 May 06, 2011
by bassnick September 25, 2006