It is rude to be overly sensitive about minor issues
Martin is having dinner in a restaurant and the steak is slightly overcooked.
Martin wants inform the waiter of the problem.
Martin gently informs the waiter that is steak is overdone but that he'll eat it anyway.
Martin yells at the waiter.
The waiter appreciate's Martin's kindness and offers him a gift card for a free dinner.
The waiter is embarrassed and brings him a new steak.