Originally Posted by Brother Jerry
MCBBM (N): "M. Carter Brown, Bowel Movement.": The act of browsing MCB while sitting on the crapper. Common motives for executing a MCBBM include looking at a sale ad that was too interesting to pause from, reading a funny thread in the Bar & Grill, and the inevitable "can't look away from the screen" scenario that occurs whenever the famous "MAr with his KP" picture is posted.
Example: I just executed a MCBBM because the Black Friday forum was reopened and I couldn't look away!