Iphone 3Gs remove Jailbreak when wet

[RPMSTL]

Try this,

Open iTunes
Connect phone
Hold power and home for up to a minute. Phone may cycle a few times but keep holding until the iTunes/USB logo comes on.
Release both buttons.
If this works a window opens that says phone has entered recovery mode and needs to be restored. Go ahead and restore to factory settings.

Not sure what effect the water had but this works sometimes.

[hinky]

Do all of the above near a hairdryer. Good luck.