It's wrong to do disturbing things to others.
John and Dave are two friends who are walking down the street together after school.
John wants to surprise Dave with something outrageous.
John runs out in front of Dave and rips his own shorts off exposing himself to the world and screaming funny words.
without warning, John grabs Dave's shorts and pulls them down together with his underwear exposing Dave's naked body to the world.
Dave is amused by his friend's crazy antics and is glad John's the nude one drawing all the attention and not him.
Dave is utterly embarrassed and feels angry and humiliated for being exposed like that.