We had a lovely meal at our local earlier. Our waiter was someone we hadn’t seen before and he told us he was on his first shift when he came over to take our drinks order. DP commented to him ‘I bet your arse is twitching like a rabbit’s nose’ to which he sort of awkwardly/politely laughed. I told DP off and he said the waiter would appreciate him breaking the ice and having a laugh with him.
I disagree and thought it was crass. AIBU?