I have this irritating thing that happens that I can't predict. I get pain in my left ball when I wear certain kinds of underwear or other clothing items, although I am not sure which ones will cause it. Generally, it is certain types of boxer briefs. They are normally the culprits. This week I think a new pair of bib cycling shorts caused the problem. Years ago I went to the doctor and had a test done. Nothing was identified. I wonder if these clothing items somehow lean against a certain nerve. I also wonder if my vasectomy from many years ago somehow is involved. Anybody have such an experience? It's hard to know when it's going to happen and what clothing items are going to cause the problem. So I spend money that becomes wasted.