I would have to take Marshmallow Creme, even though it's not really very good.
Nutella is just very odd..in a bad way.
Vegemite? One of the most disgusting things I have ever tried. My next door neighbors were Austrailians and talked me into trying it. YEACCCHHH! The woman thought peanut butter was bad, but thought vegamite was "dreamy".
Obviously, she's insane.