My ipod 5 keeps crashing when it connects to wifi

I have had my iPod for about 3 years already. It is shattered from the top (around where the camera is) and the home button doesn't work. Other than that my iPod works perfectly fine, it still works how I want it to and i haven't had any problems until now. I was helping my mom fold some clothes that we took to the laundry, and I had a cup of water in my hand with my iPod. She accidentally bumped into me and she dropped water through my shirt and only a drop of water fell on my iPod. So I just wiped it off and didn't pay much attention to it. When we came home I waited for my iPod to connect to the wifi and all of a sudden the screen turned colorful and crashed. After that it turned on by its self, it connected to wifi and it crashed again. So i decided to turn it off and turn it on but it still did the same thing. I don't know what to do.