You're right of course.
Most photos like this are pretty tame and commonplace.
The odds of these particular pictures being of the" Hot, Hot, Hot, Oh my God!, I didn't know you could do that!", sort of thing are really very small.
Less than one in three. By my reckoning.
I thought that to, it’s kids having a prank.
I did the same kinda things when i was a kid,but times were simpler ..We did not have cellphones that take pictures or videos,come to think of it we did not have the internet....