Season 4 Jonathan Sims getting used to being a full fledged avatar of the eye ouuuughh take me back. It might be my favorite part of the Magnus Archives.
I've been kicking around a headcanon that Jon can't get drunk off of alcohol after being reborn due to his healing factor. Like Jon just woke up from a coma, his (former) best friend is dead, Daisy is missing, Basira is suspicious of him, Melanie hates him, Peter Lucas is a shit boss, Georgie wants nothing to do with him, and Martin is isolating himself from them. Jon honestly can't think of a better way to spend his evening than getting black out drunk off of vodka and chardonnay. And despite his best efforts it just doesn't work. The dizzy, disorienting fog never hits him no matter how much he drinks. His body metabolizes it too fast for the alcohol to have any effect.
The eye takes his humanity and also takes a self destructive coping mechanism with it. Great.
So Jon gives up on alcohol. No use in drinking if he can't get drunk. It's not like he's going out to any social gatherings either so his begrudging sobriety goes unnoticed. Jon wasn't much of a drinker, anyway, so whatever.
HOWEVER just because alcohol doesn't work on Jon doesn't mean he can't get drunk. He just can't get drunk off alcohol, which seems impossible for a normal person.
Jon is no longer a normal person.
My idea is that if he reads a false statement (ones that are made up stories or just misinterpretations of what actually happened) into the tape recorder like he would a real statement, he gets pretty silly.
He can tell before reading a statement if it's true or not. It's like a spider sense in the back of his mind. Usually he doesn't bother with the false ones and just throws them in the discredited section. It's not like he has to research them anymore since he just knows.
He's not entirely sure why he decided to pick up a false statement and start reading it. Maybe he was bored, or he thought the statement was funny, or just wanted to give the eye a big "fuck you, I do what I want". Who knows. But when he finished and stood up it all hit him at once. Ohhhhh boy. This isn't the first time a statement has made him dizzy but this is 10 times worse. He had to sit back down or else he'd start swaying.
Jon spent the rest of the afternoon held up in his office pretending to be sober in front of anyone who happened to be passing by. It eventually wore off after a good nap but it did come with its version of a hangover which Jon wasn't particularly fond of.
(I have a whole mini fic about this scenario in my Google docs but that's a story for another day.)
