A Error relating to the person at the keyboard of a computer having a problem that is so easy to fix and calling tech support on it.
Tech support call: ::Tech support:: Tech support, How may I help you? ::Customer:: My monitor wont turn on. How do i fix it? ::Tech support:: Sir is it plugged in? ::Customer:: Uhhh let me check... No... ::Tech support:: Its a B. C. M. error. Please plug it in and it may fix your problem. Thank you for calling Tech support and have a nice day.
by Alcareru June 17, 2009
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...b's up, c's down g up in b town

yall idiots is actin' like b's and c's
by DangerousZANE June 8, 2006
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Short for "berries and cherries", meaning a combination or collection of blue and red lights, usually flashing. Can also be used when referring to police vehicles with the lights on.
"Hey man, you better turn off at the next street. It's b's and c's galore up ahead! Must be a DUI checkpoint or a big accident."

"Dude, I'm thizzin' so hard. I'm about to rave out with my b's and c's! You down for a lightshow?"

Driver: "Yo bro, toss that blunt out the window!"
Passenger: "What? Why?"
Driver: "We got some b's and c's comin' up on us fast!"
by Big Nizz November 13, 2012
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1.{Jessie is commenting on Susie's picture online}
This pic is so adorable. c/b and tell me how your doing.

2.{Allison is sending Jody a message online}
I'm sorry I had to hang up on you. My cell ran out of battery. Please c/b in 5 minutes.

by Jody vdw July 3, 2006
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