Hollywood superstar Paul Newman entertained 300 sick and disabled children in London when he took a 10-minute guest turn at Zippos Circus.
Pasta joke: Butch Bolognese is doused with spaghetti
The 79-year-old Oscar winner took on the role of a slapstick clown using the name Butch Bolognese.
All the youngsters were invited from organisations helped by sales of his Newman's Own products.
The actor started the not-for-profit company in 1982 and has donated more than $150m to charities worldwide.
Classic Newman films
Cool Hand Luke
The Color of Money
Butch Cassidy and the Sundance Kid
The star of films like The Hustler and Cool Hand Luke appeared in a green bowler hat, outsize bowtie , giant yellow clown shoes and a red clown's nose before revealing his true identity.
Among his slapstick capers were having a bucket of spaghetti poured over his head and sitting in a cream pie.
Although parents of the children knew the identity of the clown the youngsters initially had no idea who the comic performer was.
Mr Newman joked: "I'm not by inclination a clown. This will certainly end my professional career."