A thick mixture of semen, normally from many different occasions blended into one molasses like mass.
Don't you threaten me or I will throw a jar of cock lard on you!
by Devin Hogan January 16, 2008
White substance that collects behind foreskin as a result of insufficient personal hygene.
"Man I haven't been in the bath all week - I have loads of cocklard"
by cleitophon December 04, 2007