Replying to My ipod wont shut off

all right so, this first time i noticed this was on the weekend while i was skiing.
my ipod wont shut off.
whenever i push the play button, it shuts off, but then 2 seconds later, the battery flips on and it says its charging. it's not even plugged in.
i've reset it a couple times, even updated my ipod but it still does it.
worst thing is my apple care expired 12 days ago.
i know none of you are ipod experts (maybe you are) but has anybody else ever had this problem?