Not all spiders, but specifically ones with tiny bodies and long thin legs. Daddy long legs. I never liked spiders, but as a kid I went to a summer camp in the woods and there was this cabin near the pool we used for changing into swimsuits. It was just stalls with hanging curtains for "doors," so the curtain is obviously bunched up to one side when you enter one of the stalls. I went into one, pulled the curtain to cover the opening, and there were probably 15 huge daddy long legs that had been in the folds of the closed curtain. They started crawling all over the curtain and I was literally frozen in fear until I eventually had an opening and ripped the curtain open to gtfo of there.