Hello there,
I have a fantasy in mind, I want to share.

The sweet voice of my mommy breaks through the bathroom door "Babyboy, come here"
The room is dim, only the light of a few candles sines through the steam in the air. My mommy is lying in the bathtub. The foamy water is still covering her body.
"Be a good boy and help mommy" she says while she stands up.
By holding her wet hand I help her to come out of the water. I grab a fleecy towel and start slow and sensual, admiring every inch of her, towel down her body. While she encourages and praises her little helper.

(I'm not a native speaker, so feel free to correct me, if anything is wrong)