I posted about this about a year or so ago. I think about half agreed with me and half thought I was being stupid, however I want to know if I'm still being stupid now.
My mil and fil have got a thing about playfully slapping my ds on the bum, they've always done this and do it every single time we see them and several times.
However, my ds is now 3.5 years old and out of nappies, and they're still doing it.
He can just be running around or playing and fil just randomly slaps him on the bum, or if he's climbing up onto the sofa mil will start slapping his bum. Fil will pick him up and say "shall I slap your bum", fil will walk past ds and do a full arm swing and slap his bum out of nowhere.
Just to be clear I'm not accusing them of anything untoward, I know that babies and even toddlers bums are cute and of course I've patted my baby's bum in an affectionate way when cuddling him, but they're not his parents, he's getting older now and I don't like the way they do it repeatedly and randomly.
They're not hurting him and they are only playing around but I absolutely fucking hate it, it makes me cringe more and more as he gets older and I don't know how to tell them to stop it without offending them.
Dh pretends not to notice but when I've spoken to him about it he agreed it makes him uncomfortable and that he wouldn't do it to someone else's child, he more or less admitted he doesn't know how to tell them how to stop it.