I was chatting with a guy on a Truth Dare website. He dared me to meet him. As part of the preparation he had me tuck the front of my underpants under my balls so that he could get to my cock easily. We met in a car park. I got into his car with him and he drove me to a secluded spot. He got me to open my pants and inspected my little cock. I was so nervous and excited and told him if he kept on touching me I would cum. He stoped, got his own cock out and ordered me to suck it. Without thinking, I went down on him and sucked until I felt his cock head expand and he came, shooting his load down my throat. I swallowed all of it. It was amazing. I didn't cum, was just so honoured to have satisfied him. I was in my 50's, he was in his 40's.