So, this will out me to some people...
Years ago, I had a superhero themed party for my 4-year-old and his friends (and parents) at my house. Literally, the day before the party, my husband decides we need “entertainment” and finds a guy who will be Spider-Man to show up. I’m not keen, but whatever.
Day of party, Spider-Man shows up. He’s about 65 and feeble, in the suit, but not the mask, and wearing a Spider-Man baseball hat. I open my front door and he starts shooting silly string all over the place. My son and his friends run up from the basement and all start crying that Spider-Man is “ruining the house”. Crying, tears, hysteria. My husband is nowhere to be found. I track him down hiding in another room because he knows this is a disaster.
We calm the kids down and Spider-Man chills with the silly string and starts doing some subpar face painting. Rest of party goes by without incident. However, we do find that silly string can get pretty well embedded into the grooves in our hardwoods. Husband got to deal with that.
TL:dr It was a very bad idea, but a funny story now.