Have a Swimming pool in the garden, so over the summer we invite dc's friends over each week and they go in the pool. Some of their friends don't bring towels, just their swimming costumes and goggles, so they then ask me to provide them one of my own towels for them. Aibu to think that you should send your child with their swimming costume AND a towel? I know you can forget but some of their friends are always not bringing a towel with them, which is adding to my washing pile. Especially love it when they leave the soaking wet towel around the garden, leaving me to go pick it up at the end of the day.
Petty thing to be annoyed about I know, but some days I have no towels left! Should stop inviting the ones who turn up with no towel!