English Pronunciation This entry needs pronunciation information. If you are familiar with the IPA or enPR then please add some! Audio (Southern England):(file) Prepositional phrase off the beam (slang) Crazy; insane. 2012, Matthew P. Mayo, Sourdoughs, Claim Jumpers & Dry Gulchers, page 163:“They all thought I was off the beam.” He tapped his temple with a long, shaking finger. “But they come around.”Remove adsWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads