It's probably custom. Close to Baby Teeth. Not sure if there's a digital version of that one.

- Lex

I gathered some close ones in this thread.

Funny you should mention Baby Teeth, I spent all day yesterday trying to find a digitalized version of it, but the closest I could find was Bebit.
This is propably an existing font though... I couldn't find the original, but I did find a font based on this one.

http://www.myfonts.com/fonts/jnlevine/cabana-club/regular/

*headscratch* I have (pointing to a thread here, as no one I know has found a digitla version by now, not even Mike F, Philippe2, et al). Or am I misunderstanding something ...