One that always annoyed me is when it is around the holidays, when stores advertise gifts for men. They always assume a guy is into toilet humor, beer humor, assuming they’re a lumberjack who needs to survive out in the wilderness, are into bbq-ing all of the time so gotta have those available all year around for some reason.
Even when I used to have identified myself as a guy, I never once fit into any of those traits. Just because guys grow beards, doesn’t always mean they’re chopping wood somewhere and always wearing plaid.
If you were there, you could’ve just played dumb and driven the point home by redirecting each question to your coworker.