... I'm aware that these words are hand written on the original poster, but instead of recreating every single character I used "Comic Sans". ...
In this case I would do the same. But instead of using Comic Sans, there are a lot of good comic fonts out for free. Look here: Category Comic | FontPark.net or here: Blambot Comic Fonts and Lettering (the Blambot fonts are the best you can find on internet).