It happened by accident....I was helping a customer load some parts into his truck from our loading bay at work. He's my age, mid 40's, salt and pepper hair like me, and very fit. As he turned from me I looked the tag on the back of his Levis and noticed that he wore a size 31 x 30. I once wore that size, but have progressed up a bit through the years. As he turned back I noticed a hefty bulge in his pants. At first I thought it was just the fabric, but then I deducted that his jeans were too tight to allow for bunching up. As he turned again, my eyes were glued to his crotch and noticable bulge, and my thoughts were of "what lies in wake behind that fabric". I looked up and he was looking at me as if studying a painting and asked: "Is something wrong...?" I quickly made something up about daydreaming and thinking about the rest of my day, instead of the truth....scoping out his package. I felt guilty because I'm a closet crotch watcher, I've never really oggled a crotch like that before...I'm sure he knew very well what I was doing.