I know, clickbait-ish but not really!
I was at a Jubilee parade today with a male friend (who thinks he is king of witticisms). There was a crab mascot in the parade. Anyway, at the end, when everyone was dispersing, we bumped into the crab mascot being lead along by a lady. I doubt the person in the costume could have seen out and had been guided through the whole parade. My friend shouted to crab and guide, 'bit nippy today' and started to laugh. Guide looked horrified, I stepped back and said 'WTF?'. Friend was confused and said 'you know, crab, nippy?'.
He's 54 and I had to explain why you don't shout a comment like that at a woman and had to explain. I think he understood because he didn't speak to me again, sulked then went home.
Was IBU to call him out or was I being precious? The guide was a similar age to us.