I work part-time in a supermarket and it was someone's last shift. I do have a gift for her at home (as she didn't know her leaving date) but I told her to grab a few bits and I'll treat her (I didn't know what else to do).
The shopping came to £72.34! She then goes "thanks so much".
She also knows I'm a student :(
Maybe it's my fault for doing what I did, but don't you think that's quite rude?