The ones I'm referring to most are really small_testicles, large_testicles and huge_testicles and to a lesser extent gigantic_testicles. I feel like size tags like these need to be as properly defined as all the breast size tags are. The wikis for these tags give very little guidance on what an actually small, large, huge or gigantic set of nuts would actually be, by anime standards anyway. I think the wikis could do with some cleaning up, but the obvious question here is what would we consider to fit within these bounds.
To me I do what I call a "pants test" large_testicles would still reasonably fit in the guy's or girl's(futanari) pants like post #7230063, whereas huge_testicles like post #7373280 could possibly fit in their pants and but would be obvious to an observer. gigantic_testicles like post #712966 are effectively like a pair of huge_breasts hanging off the owner's crotch and pretty easy to tag in my opinion and pretty rare to see. Obviously I'm posting this to get the rest of the site's opinion on this and see if this is something that can be updated on the wikis. Or is this a weird tagging hang up to have and I'm just going nuts?