I'm the caretaker for my father and live with him. He's not severely disabled or anything. Just old with a colostomy bag I change for him when I'm not cooking all the meals and doing house and yard work. I've been changing it four two years now. About 8 months in he started being naked when I'd change it. Neither of us ever said anything. I just thought it was more comfortable for him or something so it would stick to the hem of his clothes and he didn't have to hold them with his thumbs. (I change it while he's on his back by the way.)
I'll preface this by saying it's always been an unspoken thing that we don't talk or look at each other while I'm changing it. It's awkward and involves poop so he's embarrassed, but we gotta do it. He tells me it's ready to be changed. But once I walk in the bedroom door. Silence and no eye contact. Unwritten rules between us.
After he started doing it naked he'd occasionally get hard. Neither of us would say a word. Obviously in my head why didn't he take care of it before calling for me. But I never said anything. But I did look at his phone. He's old and doesn't know barely anything about technology. He just learned how to hang up his new iPhone when he's not the one that called first. It was full of porn. Every kind you can think of. But sprinkled in there was some gay and Trans porn which didn't make sense to me cause he's the most prejudice person I know. Uses slurs, the whole nine yards. But here it was.
At first I starred doing it as a joke. I'd get myself hard whenever he called for me and go in there to change it with the most obvious tent in my shorts imaginable. Neither of us said a word. Eventually we were both hard every single time I'd change it. Six months ago I started laying it on him and poking him with the tent. Laying it on his leg, his wrist, poking his side. He brushed it a couple times "accidentally on purpose" type stuff.
After a couple months of this I took it out mid changing his bag and just let it be out there hard. No reaction, no words, nothing. The next time I pulled it out at the start. Nothing, no words. The next time I came in in my boxers with it hard out the front of the slot from the start. Laying it on him. That stayed for a week before I'd walk in naked. Then I did it naked and hard for about another month.The only place to go from there was further. I started stroking myself and wiggling it. Slapping it on his thigh or his belly whenever I'd pause to grab the next piece or adjust.
Two months ago it went further. When it was an emergency one from a blow put everything would be normal. But when it was routine. The new routine was me to walk in, get all the supplies out and ready, and then jerk off over him. I didn't start changing it until after I came. At first I'd cum on the bed next to him. Then his arm. Then his thigh,. Then his chest. I'd always wipe it off right after and then clean him up. No words, no eye contact, nothing.
Six week ago I did it over his face for the first time. I stroke over his face, he immediately closed his eyes, but I couldn't cum on his face the first few times. I aimed at his chest. But I eventually did. Came right in his face and would wipe it off immediately after. Letting it sit there for longer and longer each time. It's almost like he closes his eyes as soon as I put the supplies out. I never see his open eyes. But I cum on his face every time now. I started leaving it until after I changed it before wiping it off. Just a couple weeks ago I started leaving it for him to wipe off after I leave the room.
I don't know where to go from here. Because of his surgery he doesn't have an anus anymore so no butt to put it in. Do I tug his chin down, and cum in his mouth? Pull it out at other times like just walk into the living room, or in bed right before bedtime and do it outside of the bag changing? What's the next step?