No you don’t sound like an old fart re. your son hearing such language but if he’s of primary school age and you’re taking him down the City he’s quite familiar with ‘industrial’ language. I dread the thought of playground language being littered with it but for you to lump it in with a song about paedophilia is wrong, quite wrong. Forget opinions, swearing in conversation or in the lyrics of a chant or song is a world away from a song about a man raping his son. Surely you see that.