The kid might scream, or parents/nannies might overlook the conversation and come to the wrong conclusion, but it usually ends with several parents chasing the would-be-creep with peppersprays, purses filled with bricks and TASER guns. If he's an Unsympathetic Comedy Protagonist, we also laugh.
If he's an actual paedophile, the trope doesn't really apply.
The victim is almost Always Male because of the Double Standard that men are always after sex while women never are.
Conversely, a female Friend to All Children can do things that would easily get a man lynched, and would just be dismissed as playing around or being nice, due to a woman's supposed lack of perverse desires.
"How would [your son] like to come with me to the Museum of Natural History after everyone else has left, just the two of us, and he can touch anything he wants...
I just heard it as you must have heard it and that's not good. I'm a palaeontologist, you'll be there with us and the touching refers only to bones... " when the person being persecuted is innocent (of that particular crime).
I am actually Colombian, my family is Colombian, and more importantly (aside from my height, 6’2″) I look Colombian.
I have lived my entire life, barring the past 5 years of course, in Southern California.
I am aware of the underworld of sex tourism in Colombia and I am aware that there are many strip clubs, and brothels in Medellin.
Strippers and hookers are not the type of girls that I date, so I will not be referring to that in this post. My situation is a little different than most foreigners here in Colombia.
It usually goes like this: A small child grabs the Mac Guffin the main characters are trying to fetch, or is otherwise important to the plot in some way - they might be children of the boss to whom they have to suck up, or even a Mac Guffin themselves.