Short version or Nickname for the Toronto Raptor's PF, Chris Bosh. Given the nickname by The first letter in each of his first and last name followed by his number (4)
For the dumbasses out there,
C hris B osh #4
CB4 is a pseudonym for "cockblock". Friends do not CB4 friends, unless the woman is over 300 pounds or is a man. The term can be used in public settings.
"I had this chick down to her underwear, when Mortwalked in a CB4'd me."
