check his calendar
To check his sanity.
"Can you imagine if Walter Alston wore a football helmet during the baseball game? They would truck him away, man. 'Get him out of the dugout, man. Check his calendar!'"
-George Carlin, An Evening With Wally Londo Featuring Bill Slazo
-George Carlin, An Evening With Wally Londo Featuring Bill Slazo