Had a bit of a row a couple of years back being told I had quite a large tab when I knew I didn't.
Turned out it was a mate of mine's tab. My username here is actually my nickname by which I'm known, but the bar bill was for someone who was always known as "posty" but whoever had started the...
Definitely used it in that situation. My local had a £5 minimum spend when using a card, so if on my own would often pay for 2 and "leave one in the bin"