Obvarent
Knowing someone's past just by looking at them now. Like your brain is a time machine and it's also a punchbag.
I obvarented he had a history of bad decisions when he walked in wearing a shirt from 2007.
She obvarented the boy was a troublemaker when he showed up with a green hairdo.
He obvarented the dog had a bad day when it saw the vacuum cleaner.