CK
noun
1
Calvin Klein™ clothing. Favoured by members of the Bloods youth gang, to whom the initials also stand for 'Crip Killer' US, 2000.
2
a mixture of cocaine and the recreational drug ketamine US, 1995.
3
cocaine US, 1971.
4
a man who feels that he has to disparage other men in front of women. An abbreviation of COCK-KNOCKER US, 2002