#21 How Did He Know?

I had a delivery to a normal address, but two blocks away from it, a guy on a bike flagged me down, asked if I was a delivery guy, then said it was for him when I confirmed that I was. He gave me his phone number and it was his order. We didn’t have those signs on the top of our car, and I was in a busy suburb, so I have no clue how he knew it was me.
Credit: diabeticfunk