Meet a guy who has no problems opening wide for his dentist - that's because he has the world's WIDEST mouth!
Francisco Domingo Joaquim's 17cm-wide mouth is so big he can fit a drinks can in his mouth SIDEWAYS - definitely NOT something to try at home!
He said it's a "dream come true" to be a Guinness World Record holder.
Researchers spotted him in a video on the web and spent two years tracking him down to his home in the African country of Angola!
Craig Glenday from Guinness World Records said: "When we first saw [him] we were speechless.
"Tracking him down in order to measure his mouth took a good few years but it was worth the effort."