First comment, I would have titled this story, Butt, Butt, Butt...This Was Funny.
It was funny. Very funny. I laughed out loud several times.
I'm curious about the read ratio. Did you not get views or get views but not reads?
The title and the graphic fit the story but wouldn't have been enough for me to click if I didn't know your writing already. I would have added the phrase "church camp" to the end of your title. Church camp and band camp are both comedy gold in my mind.
If your readers bounced it may have been the fact that they have been a 12 year old girl and remember how deeply unsettling it was to realize boys were talking about and ranking their body parts.
Which doesn't mean you can't write the story and make it funny. 12 year old boy butt humor and dawning sexual awareness are universal and anything universal is ripe for humor mining. But at least a nod in that direction is appreciated.
Add the phrase "well deserved" in front of "dressing down" in the penultimate paragraph. It acknowledges that adult you see a little more depth in the story than 12 year old year who just found it all funny without derailing the humor in any way.
Your ending is perfect.