LL Cool J is nickname
Stands for Ladies Love Cool James....
‘Nicknames’ are acquired and used amongst friends, not thought up by the subject who then insists in being called it by everyone else.
It appears as his name in the credits of everything he does. Its a pretty tiresome habit common amongst certain people who revel in black ghetto trash culture to give themselves these retarded names.
It doesn’t impress me much, not that they’d care I suppose.