Fingernail polish remover (acetone), that's what the hospitals use when they get people in that have glued their butts to toilet seats (among other things)
In my experience GOO GONE!
And here's a link that will tell you how to get it off just about anything else:
... Just read the instructions
Put your hand in hot water , make sure the water isn't boiling hot, the glue will melt and come off... This trick always works.