I look after a friend's 2 primary school DC's when they've finished school, every Monday. They often have swimming lessons so I take them to that, whilst I have a short swim with my DS and then get ready to get them.
They are on a small break from it so we did a fun swim instead. Their mum asked me to take them to Pizza Express for dinner. The one she was thinking of is no longer there so I took them to Pizza Hut style place instead.
My own DS was asleep and wasn't having anything. We got a huge pizza with bottomless drinks for all of us. The kids had an ice cream each. This all came to £16 so a fairly good deal. Loads of pizza was left over so I packed it up for the kids.
When we got to their house I handed over the change (the mum had given me £40 for their food). The receipt for it all was coincidentally in there to.
I've just received a text from friend saying ''Hi, was your drink at the pizza place paid for by you? Just wondered as the money was for [NAME REMOVED] and [NAME REMOVED]. The pizza was obviously huge so not bothered at that being shared! "
In truth I didn't pay for my own drunk, no. It was £2.70. Yet I don't charge if I've ever picked something up for the boys quickly. I don't charge for petrol going to and from their school or swimming.
Was I really being that cheeky or is she rude? 
[Edited by MNHQ to remove RL names]