These two tags are nearly opposites so why do they so often appear on the same post? big_penis means "-large penis but is anatomically possible" meanwhile hyper_penis means "An impossibly large penis...". Their definitions are in direct opposition to one another! These two tags SHOULD NOT be used to refer to the same penis within an image...so the fact that there are 224 pages to this search: https://e621.net/posts?tags=hyper_penis+big_penis+solo means people are routinely misusing these tags.
I assume the same problem exists between the "big" and "hyper" versions of other tags as well ("big_ass" vs. "hyper_ass" comes to mind)...what can really be done about this issue? I'm sure that there are a bunch of bad taggers that just smother every sort of size-related tags on their posts. I think the tagging habits of those users should be more readily policed otherwise you literally have two contradictory tags on the same image which just ruins the entire point of sizing tags altogether.
EDIT: Oh my god it's an IMPLICATION? Are you kidding me with this!?