The weird feeling you get when you are expecting to experience a certain thing, but experience something else instead.
For example.. when you take a drink, and you expect it to be milk but it turns out to be apple juice.
Or.. when you are climbing stairs, and you expect there to be one more step than there actually is.
To twingle : such a state of euphoria that your entire body has the feeling of being asleep, but doesn't hurt. It's like when your foot falls asleep but covers your entire body from head to toe, and doesn't hurt when you walk