So, I found this video on youtube:
It basically has some advice on Tamagotchis, cheat codes for the shop, and a very interesting glitch in my opinion...
"Buy loads of food, as much as possible, then start trashing the food non- stop, then after about 10, you will have an unlimited ammount of balls. Then in meal got to P. It may freeze a few times but eventually you should get an item that looks like a bag of points, eat this and your skill points will increase by about 300, it respawns every 2 hours though"
So, ever happened this to you? Is it safe to try it on a tama, or will it stuck or something?