The point of this story is the sense of humour the WWII vets have. However the background may also be of interest.
At my bachelor party, in 1995 as a 30-something year old I invited my best friend's father and my uncle. Both vets.
My uncle had been in the US army - not in Normandy but as part of the Italian campaign. He attempted to volunteer - though nearly legally blind - and after several (deserved!) rejections finally memorized the eye chart and was accepted. His first assignment was to analyze photographs of bomb damage. Luckily he was reassigned to other duties before he did too much harm to the Allied Campaign. I knew him as a jolly, shortish, overweight man. He had the inevitable clash with his 18 y/o son who was fit, athletic, and had a good foot on my uncle. During the fight my cousin made the mistake of asking his father which army was going to help him enforce whatever rule it was, and pushed my uncle. His father (my uncle) had him pinned on the floor in no time flat. His father and the US Army was the answer. For the record they were very close and loving - and that incident probably only strengthened the bond.
My best friend's father was in the Canadian Army, and was in Normandy on D-Day plus +2 (iirc) as a truck driver. More stories there that I won't relate...but whey you saw him in his grey trousers and blue blazer and medals... His pride radiated.
Back to the party. Large table of young guys and these vets, young pretty waitress.... and it's the vets who are the most shameless flirts. Including the line... "Have you ever dated a World War II Vet?"
Still brings a smile for me. Both gone now... but I think fondly of them often. And I thank them.