The amount and variety of sexual experiences that any given man's cock (treated as a separate entity) should be entitled to, which may be hampered by it's 'owners' lack of sexual prowess, confidence, or unusually high standards.
"I don't care if he doesn't find her extremelyattractive... he should date her as he needs more cocksperience!"
"I'm nearly 40, and still a virgin... I need to ramp up my cocksperience!"
Someone who has been conditioned by centuries of cocksucking ancestry to suck cock. At a young age, cockspartans are sent on a cock spirit quest in which they must wrestle a wolves cock.
Dudeffer: Look at that guy over there.
Broseph: Dude, don't stare, I think he might be a cockspartan.
Dudeffer: Pfft wtf is a cockspartan? that's just madness.
Cockspartan: madness? hah this isn't madness.. THIS IS COCKSPARTA!