In order to save a little time, I will follow the format of the list, referring as me as an anonymous user.
Pants discoloration stains -> poolman / works with chlorine or bleach
Source: anonymous user
Confidence: High
Relevant Background:
If you make the maintenance of a pool or work with bleach, you are gonna get this stains on the cloth, probably the pants because they are more closer to the floor/pool. In some countries the people clean the floor with bleach and water. You can also see this type of stains on people who bleach they hear, but probably the stains would be close to the head instead of the pants or cloth that is close to the floor.
Bruising coming from the upper eyelid -> Blepharoplasty postoperatory
Source: A doctor friend of an anonymous user who exposed to this operation
Confidence: Mid-High
Relevant Background:
This type of surgery leaves bruises on the eyes as if you had been punched twice, once in each eye. This probably varies because everyone heals differently.
The effects of this operation seem to last ~ 1 month.
So if you see marks from this, it is because the operation was done a few days or weeks ago. This isn't just an aesthetic operation but a life quality operation because some people can see well because the upper eyelid can block your vision!
Please tell me if I explain this 2 characteristics good and if I need to be more specific or explain something