I finally went shopping again the other day and as I rarely do it anyway, I went all out. Of course, my bag was extremely heavy and full and so I couldn't say no when a nice gentleman offered to carry the bags to my car.
Of course, I wanted to thank him for it, but as he didn't have that much time, the "drinking coffee" turned into a "blowjob in the car park". There was only one thing we hadn't reckoned with: The security! And they caught us just before his orgasm... It was still worth it, I don't think he's ever had such an exciting time.