;-- random stan headcanons bc yes:
stan is an exceptionally good dancer by accident. he just moves his body to the music and somehow it works. tbh his confidence is what really sells it.
stan has dated so many women, he has lost count. he uses this as a 'show off' statement when he's boasting, but he's actually ashamed of it. girls liked the bad boy side to him, his humor, his smoothness, but when they found someone just as bad but more successful, they would leave him. he struggles with being anyone's favorite, always second best, and it evolved from not being loved enough by his parents. so every relationship he's had had ended with them ditching him or him ditching them first so he doesn't have to deal with rejection, leading to him having commitment issues. unfortunate enough that not all girls he's been with were flings and some genuinely loved him but he never granted that chance to them and with hiding himself using multiple different identities, it was impossible for the girls to go looking for him to rekindling broken bonds. now that's he's older, he really wishes he can settle down with someone and grow old together but he's kinda lost hope. what keeps him going now are his niece, nephew, and his stupid nerd brother.
stan would fight you tooth and nail when it comes to nickleback. he loves that band. catch him singing at the top of his lungs on a saturday morning to Photograph while he makes burnt pancakes.
stan actually has a very tasteful sense of fashion, always has the right outfit for the right occasion and enjoys dressing and getting all freshed up. but he prefers to be in his boxers and tank top while at home.
edit, added in: stan is also very good at punching. when he was a kid, his dad forced him to get boxing lessons at the local recreation center to "toughen him up". at first, stan HATED it bc all the other kids we bigger and too rough for him. he was more of a weapon kind of guy, using his slingshot to throw rocks at others who wanted to mess with him. but he quickly realized that a slingshot alone wasn't enough to protect him and his best friend and brother, ford, after a couple of bullies picked on his brother for his oddity and stan had no means to defend him with just a few pebbles. so this became his biggest motivator from then onwards, to always practice his boxing skills and keep them sharp, so he can have more than just a gun to protect what's precious to him ( sometime when he arrived to gravity falls, he bought himself brass knuckles and they have been his best friends ever since, named Fuck and You bc he's silly like that ).