CKY is an American rock band from West Chester, Pennsylvania. CKY was formed in 1998 by lead vocalist and guitarist Deron Miller, guitarist and backing vocalist Chad I Ginsburg, and drummer Jess Margera. Originally known by the full name Camp Kill Yourself, and later as Camp, CKY got recognition through its musical contributions to the CKY video series and the TV series Jackass, both of which featured Jess Margera’s brother Bam Margera.