Revealing mistake: When Mr. Bean goes back to the hospital desk clerk, and she asks him to take a number and then he does and throws the ticket in the bin and he gets the bin stuck on his hand. But you can plainly see that he is just holding onto the bin. (00:08:30)
Continuity mistake: Mr. Bean places his shoe on top of the car in the bottom right corner. But when he jumps out in front of the car, it is suddenly at the front in the middle.
Trivia: The Latin lyrics used at the beginning are "Ecce homo qui est farba, qui est farba, qui est farba", which mean "Behold the man who is a bean". At the end, it's identical, but "Ecce" is changed to "Vale"; "Farewell, man who is a bean." Before and after the advert break (in the UK version), the lyrics are "Fin de partie primae" and "Pars secunda" - "End of Part One" and "Part Two".
Answer: It's never been revealed.
May be able to find out more on the animated series.
Answer: In Mr Bean animated there is an episode where you see Mr Bean as a young boy and had the teddy then and he also liked mini cars. There is another Animated episode where Mr Bean discovers a UFO full of people who look just like him and they each have their own individual stuffed toy.
Dan23