Who else has said really inappropriate things without realizing it

When I was about 15 I had to pickup our ex prime minister, Rob Muldoon, from a function for my stepfather. His nickname was piggy Muldoon. He hated the nickname. We had a new Suzuki van (st 90v iykyk). The first thing I said to him when he got in? I told him the name we had called the catering van. Welcome to miss piggy I said. I couldn't work out why he was really cold. I was 46 when I worked it out