i think jisung likes to watch porn but is embarrassed about it (real people porn or hentai). he'll scout the internet for somethign that interests him for like an hour because hes so particular about plot and romance and about how hot the top is (wants to find someone that he can project minho on).. i think he likes to lay on his back fully naked and edge himself to "last for the good bit" (of whatever he's watching). i think often he's too lazy to use lube but doesnt really have to cus the glide of his foreskin is enough. and hes sensetive so he doesnt really need much to come (hes just stubborn about what media he consumes meanwhile). and if he does have lube right there, he switches to fingering himself because he might as well! since the lube is right there! i think when he fingers himself he presses his face into his pillow and thinks of minho and humps the matress and tries to get 4 fingers in (he kind of sucks at it though) because he loves to feel stuffed and he likes how boneless he feels after. he uses toys sometimes, i just think he likes to plug himself or sit on a big dildo and then not actually move it. just likes to feel full and then jerk off alongside it

minho doesnt watch much porn but when he does he loops faceless clips of twinks that have a similar build to jisung. similar waist to shoulder to ass ratio. hes doing this while lounging somewhere either on his bed or on his couch, in a relaxed sitting position, fully clothed. (explodes) scrolls on his phone and takes his cock out of his sweatpants and holds himself until hes hard (big cock. takes a little longer to get hard). he uses lube because i like to think hes cut and it feels better that way because he likes to grip himself tight and fuck into his fist while imagining fucking jisungs ass. if he fingers himself he does it in his bed and just uses a finger or two to get to his prostate, he doesnt like anything big in there. he doesnt use toys. i think if jisung ever buys him a fleshlight he'd pin jisung down and use it on him

this is obviously just fanfiction btw. but its fun to think about !! thank you for asking..