Theres really no telling what will happen when your mobile gets wet. It just is so much electronics inside a phone. But if you follow these tips you should hopefulle be fine. Here you can see this unlucky guy who got his cell phone wet, this is what can happen:
Apparently this guy washed his phone in the washingmachine. Then he plugged it in after letting it dry over night. But unlucky him the phone only would turned on and on and on and on... its serious toast that phone im afraid.