So, I've been watching episodes of Supernatural over my lunch break since... last week's apocalyptically shitty news. And I just thought of something. CW created both the Arrowverse and Supernatural. And in Supernatural, Dean tends to call Sam "bitch", to which Sam replies "jerk".
In season 2 of The Flash, Lisa Snart calls Len a jerk and his response is to call her a trainwreck. It's prolly coz it would have hit different to call your sister a bitch, but damn... does this mean the writers of Supernatural had a hand in some of the scripts for The Flash????
I think my brain bluescreened a lil, going in way too many directions today, lololol!
In one of the later episodes of Legends of Tomorrow, which is a spinoff of all of the Arrowverse shows, the Legends rock up onto a Supernatural shoot, and it is heavily implied they are the reason the show carried on as long as it did (or something to that effect)