Currently the "thor" tag can be used in images that include either characters whose names are "Thor" or which contain depictions of the well-known enormous dildo known as "Thor" that is manufactured by Zeta Paws.
I haven't checked to see if any of these are actually of Dr. Laura Berman's "Thor" vibrator, but knowing the community, here, I suspect not. Furthermore, not all giant dildos are "Thor", and if you can't see the "ridge" about 2/5ths of the way from the base (in the real-life object) you can't assume that it is. There are other very large dildos that could be mistagged by people who don't religiously follow the "tag what you see" rule.
The "thor" tag is a character tag. The Thor dildo is not a character.
Therefore, I think we need a tag to distinguish between the two, i.e., "thor_(dildo)".
In addition the following implication would be needed: thor_(dildo) -> dildo
It might also be helpful to re-do the current "thor" tag to "thor_(character)" and to make "thor" an invalid tag to prevent it from being used for both things by taggers who don't realize that the word can be doing double duty.
Updated