Some parts of this fantasy might be age, time-period, and gender-specific, but here is my fantasy about an ideal bedtime routine:
I'm sitting in the living room, watching TV with a woman who is 20 years older than me, and who is dominant over me.
She announces that it's time to get ready for bed.
We go to the bathroom, and she runs the bath water. After the tub fills up, I strip naked and climb in. She washes me all around gently.
Afterwards, she dries me up with a towel, and lays me onto the changing table.
She rubs baby oil all over me, puts flat cloth diapers under me, and applies diaper cream and baby powder on my diaper area.
She then points my penis downwards, folds the cloth diapers on me, and ties PVC snibb diaper covers on them with two cute bowtie-knots on the sides.
She pats the front of my diaper, and tells me how I'm protected through the night.
I'm now lying in front of her diapered in cloth diapers, and a plastic covering on them reaching up to my belly. The smell of baby powder, Neogranormon cream, and PVC fills the air. She knows what it was like to diaper babies back in the 80s and prior, and applies the same technique nowadays.
My masculinity is reduced to a genderless bulging baby diaper which also could be on a girl. On both genders, they have the function to catch pee and poop, there is no discrimination and difference. Both boys and girls erupt into their diapers with the contents of their bowels and bladders. While diapared, I might as well be a little girl.
We climb into bed together, being close to eachother. I bury my fingers in her hair, she does the same to me. She does ASMR whispers into my ear until I fall asleep, then wet my diapers while I'm sleeping. In the morning she will change me, but before perhaps, she will even make me poop my diapers and dance in front of her in that state!