I was in St. Nicks market in bristol (it's all enclosed and awesome, shown in spoiler)
and I had bought a new belt buckle in one of the shops. We were around a corner, waiting for my friend to buy something. I was wearing said buckle, and my girlfriend bent down to get a better inspection of it. At this time my friend walked back around the corner, along with a load of his friends he had bumped into, to introduce them to us. From their angle, it looked much like my girlfriend was 'servicing' me. It was worse for her than for me really, but it was still pretty funny. Trust our luck.