Recently the children have been experimenting with different hand gestures and I have had to tell them that a couple are not at all appropriate.
Last week Rachel and Helen were playing with walkie-talkies. When it was time for them to get ready for soccer, I borrowed Helen's walkie-talkie to tell Rachel to come upstairs and get changed. When I gave it back to Helen, she shouted into it "Rachel, come upstairs now or I'll show you my middle finger!"