I didn't know who he was and turned him down :(

I flew into Love Field several years ago to stay with my aunt and saw Robert De Niro pulling his luggage to a car pulled to the curb. He was having trouble pulling all of them at once so I helped him load one into the trunk. He clapped me on the shoulder, gave me a big smile, called me a good kid and asked if I'd want to come get dinner with him. I didn't know who he was and turned him down so I could get to my aunt's house. She watched the entire exchange and waited until we got home to tell me, through laugh-induced tears, that she'd be telling this story at family gatherings for years to come.