I'm studying in a coffee shop and I needed to use the restroom for a moment, but wanted to leave my notepad, folder and coffee on the table. I asked the two young women at the table next to me, "Mind if I leave this here for a minute?" One said "sure," and I said, "Thanks!" I took my phone and wallet with me.
When I came back to the table 2-4 minutes later, I was still settling back into my seat and putting my phone away, when the girls looked at each other, giggled, and one said a loud, sarcastic, "You're welcome."
I replied with a smile, "Thanks, I was getting there!" but I thought to myself that they really have no idea why it took me more than 3 seconds to thank them. I thought at first that it might be that they were eager to leave, but both had full drinks, and they didn't leave for another 30 minutes.
So, 3 questions:
1. When can you make the interesting assumption that a thank you will not be coming?
2. We've discussed this one before, but was this a good use of the sarcastic "you're welcome"?
3. Does keeping an eye out for a stack of papers merit a thank you in the first place?