"It's such a warm day today"

I say, and smile at my step-mom. Millie smiles back at me, then closes her eyes, still rubbing the ice cube on her big tits. A few seconds pass, then she says:

"Jump in the pool if you want to cool down a bit."

I sit and think for a while, then I slip of my shirt, walk over to the pool, and sit down on the side, dangling my feet in the water. I risk a quick peek over my shoulder to see my step-mom's big tits. Looks like her eyes are still closed.

I spend what must be a good thirty seconds admiring my step-mom's big tits in her pink bikini, and then I slip quietly into the pool.

I swim around in the pool for a while cooling down, but after a few minutes I decide that I have had enough so I climb out, hoping I look athletic while doing so in case Millie is watching, but as I walk back to the sun loungers it looks like she is still sleeping. Her big tits heaving up and down as she breathes regularly and deeply.

I sit there for a while admiring the view, feeling myself starting to grow hard. Millie is snoring softly now, she must be deep asleep I think to myself.

Very, very slowly I move my hand so it is touching the side of Millie's body. She does not react at all, so slowly I move it upwards and let a finger rub against one of her massive boobs.

Millie stirs a little bit, so I quickly pull my hand back, but her breath does not change, so she is still asleep.