Dean abusing his transportation abilities to get pie from that awesome place in Denver

Sam always leaving his laptop in the middle of a devil’s trap so Dean can’t watch porn on it anymore

Dean popping up at random times and scarring Cas cause karma’s a bitch

Sam rigging the shower to switch to holy water after half an hour so Dean doesn’t use up all the hot water

Dean making “so an angel and a demon walk into a bar/morgue/crime scene/house” jokes every time he and Cas work together on a case

Sam summoning Dean every time he tries to get out a dish duty

Dean buying a pair of red sequin devil horns and wearing them around the bunker

Sam buying the matching tail and pinning it to Dean’s pants in the morning before he’s had his coffee

Dean buying one of those little car freshener things because he doesn’t want the upholstery to smell like sulfur

Dean flicking his eyes to black and making weird faces over victim’s shoulders to try and make Cas laugh

Sam threatening Dean with an exorcism if he doesn’t do his laundry

Dean misusing his new Latin fluency to insult Sam (he may or may not call him a female moose)

Cas and Dean playing teleport tag

Dean’s eyes going black when he orgasms feels really content like when you can see cats’ nictitating membranes except 40000x hotter

Dean playing fetch with hellhounds and teaching them tricks