@Anonymous

From when I was 11 up until I was 18, I was a babysitter for two little girls (started with one).

So, this whole time, I experienced the beginning, middle and end of puberty.

The mom of these little girls had a HUGE ass. Imagine two deployed airbags full of pudding and decent-sized breasts. Depending on what she was wearing, they appeared to be anywhere between C and D cup.

One day, when I was 13, I thought it was a grand idea when she came to pick them up from her shift as a nurse to walk up and touch her butt.

At first, I was making it look like an accident, like brushing my hand against it, but over a series of a couple weeks, I was more deliberate, practically spanking it.

Each time I did it, she didn't react or anything. She didn't say anything to me, nothing. Three possible reasons why that was so:

1. She was probably busy gathering her kid (this was shortly before she got pregnant with the 2nd kid) and couldn't care less.
2. Her butt was so big she didn't even feel it or notice.
3. She liked it.

My grandmother, who really was the head babysitter for 70% of the day, saw me do it and berated me, with the following highlights:

"I saw you spanking her hiney. What are you some kind of a pervert?"
"You're lucky she didn't turn and smack you in the face."
"Do you do this to the girls at school?" (Me: "No, they're not huge like hers.")
"I don't care how big it is."
(Most important): "If I see you do that again, I'm gonna tell your parents."

That last one scared me, yes, even at 13.
So, to say the least, that's when it stopped.