2 - May also be used in the sense of guts or courage
3 - Can sometimes refer to the testicles depending on the context.
person 2: 10 inches.
person 1: (open jaw)
2 - person 1: You think John can do it?
person 2: No man, his kharouf is too weak; he's gonna wuss out.
3 - person 1: I don't think I can go see her after what happened last night.
person 2: Yo grow an extra kharouf and man up.