It seems that, when Dead Baby Comedy is concerned, sexual attraction to children is as good a source of laughs as anything else, especially when the person being persecuted is innocent (of that particular crime). 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 TASERs. If he's a villain, we laugh. If he's an Unsympathetic Comedy Protagonist, we also laugh. If he's an actual paedophile, the trope doesn't really apply.