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It comes from Bill Cosby, and was used in his stand up routine when he talked about going to the dentist. After having the injection his mouth has gone numb and his lips are hanging loosely. The dentist asks him how is the family and he says "ObKb", because he can't move his mouth normally.

There may also be other references to OBKB in Fat Albert and the Cosby Show.
Dentist "So Bill hows the family?"
Bill "ObKb"
obkb by Aaron Markie February 14, 2005
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It's like saying "okay" but adding some bee sounds in for extra cuteness/stupidity.
Bill: Let's go to the beach.
Albert: obkb!
obkb by plasticus April 28, 2004
Related Words
ok, be kool, bye
obkb by Anonymous October 6, 2003
Okay, bye bye
later douche,

OBKB!
obkb by MF B February 6, 2003
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