Looked after my friend's child while she went for her 20 week scan. I don't mind helping although she knew I was really busy myself she has no family around so of course for this I didnt mind re-arranging. However, said she would be back by 2.30 giving me time to do my other stuff 9 (not that I said that out loud) and she didn't come back until 4 as decided it was a good chance to go to Tescos child-free. Then sat down for an hour for a coffee so I got absolutely nothing done all day it has set me back. She always does stuff like this she doens't work and because I work from home she thinks it is acceptable to drop by for coffee and sit there all afternoon. Doesn't help that her daughter bites my son all day and tips the toys all over the place. AIBU?