Hazmat teams were called to Disneyland in California on Friday after reports human poo was being thrown at people.
Seventeen people - 11 adults and six children - were hit by the faeces, which turned out to have been dropped by a passing flock of geese.
"It was clearly goose poop," Sgt Daron Wyatt of Anaheim police said.
No one was hurt in the less-than-magical experience, and the theme park supplied showers and clean clothes to those affected, so they didn't have to go home.
"All guests are healthy and happy," the police tweeted afterwards, adding that "no crime" was committed.