Very out of the blue and out of character. Yesterday, after putting the kids to bed, me and DH were cooking something together and he was standing behind me. He put his arm around my neck and began to jokingly mimic as if he was choking me. It made me feel extremely uncomfortable and I instantly called him out on it. I asked him what the hell he was doing and not to simulate trying to kill me. He said it wasn't that and it's how you put someone to sleep.
Now thinking about it today, I feel really weird about it. He has never ever done anything like this before. Should I take this as a massive red flag? I don't want to make a scene out of nothing but it was just so unlike him and odd that's it's left me feeling unnerved.