["I couldn't pay for all my groceries and someone came up from the line behind me and paid for the rest. I was so touched!"]
Wow, how amazing is that!? I wish someone would do that for me! I mean, I don't think I buy more than $30 of groceries at a time since it's just me, but still!
I couldn't pay for all my groceries and someone came up from the line behind me and paid for the rest.  I was so touched!