We've been going to local major superstore for years. One of the trolley pusher (elderly) seems to single me and DSs out every time (though he does it to other small children but not as obtrusively). Shouts "ho ho ho" every time he spots us, even if it's right across the car park... People always stare, like WTF? DS1 (7) is STILL scared of him, and he isn't afraid of much! Trolley pusher will chase DSs, well not so much chase as a "controlled stroll" towards us, like the vilain of a horror movie. Scares the sh!t out of DSs. He doesn't say anything particularly weird, just - relatively - normal things, like "are you going to be good for you mummy?", "you're a cheeky boy, aren't you?", stand really close to us, pinch their cheeks. But the way he says it... I don't know. He also does this when (usually lot younger, shy) colleague is present. I don't know what to make of it.... Usually just laugh nervously politely.