I remember it's a group of 5 or 6 kids who find a map which indicates the position of a treasure, maybe related to a pirate chest.
- There was a fat boy who ate whipped cream at the beginning directly with the aerosol, or maybe it's mayonnaise.
- One has some glasses and he's smart. During a scene at the end he falls on a trap with spikes and gets out with a hand spring.
- One of riddles inside the movie is solved by a girl (or the main character, I'm not sure) by playing piano.
I watched this movie on TV several years ago, maybe in 2000. I think it's a US movie but I'm not really sure. It's not an animated movie.