My boss will correct myself and other colleagues during casual conversations if we say 'me and bob are going....' to 'bob and I are going....'. I find this really rude and unprofessional - I know 'bob and I' is correct and I would use this whilst working (e.g in meetings or in emails) but when I'm on my lunch break I don't expect to be corrected. Would you find this annoying/ patronising?