I was in the bank today being served by an assistant, there was a lady being served next to me and the male manager serving her was having trouble with the computer. After a minute or so he said "sorry about this, the computer is being female." The lady replied to him with, "sorry?" and the assistant serving me raised her eyebrows but didn't look up from what she was doing. A lady from the long queue behind us said "I'd poke him in the eyes for saying that" to which the lady being served agreed with nervous laughter. The manager replied with "Ah now that's why I wear glasses". The lady got her things together and left quickly. The manager was just staring at her, like he wanted her to react or something.
I'm disgusted at this manager, AIBU to complain to the bank? There is no way that someone should be expressing those views and believing they are prefectly reasonable, or was he making a bad joke/badly judged comment and I've made more out of it than I should have?