Mooning is when someone shows their bare buttocks to other people. This is not okay to do in public because it is disrespectful and inappropriate. Just like showing other private parts, we need to cover up our butts with clothes. It's something that should only be done in private or with very close friends who are okay with it. If someone does this in public, they could get in trouble with the police or face other consequences. So, always remember to keep your clothes on and show respect to those around you.