Is a white lump under the skin on the male ball sac something to worry about it is about the size of a piece of homney?

Sebaceous cyst. Sounds classic for a sebaceous cyst. These are usually creamy white. My training and consultation with many on this is to leave them alone. If it becomes red, irritated, infected or cause problems, they can be removed. Don't press on them or try to express them. If you have questions or concerns as to what it is, see pcp, dermatologist or since on scrotum, urologist!