noun: a Wet Betty is the step sister of the wet willy. a Wet Betty is performed by sucking your finger tip, and swirling it around in someone's exposed cleavage and yelling "WET BETTY." This can only be used on EXPOSED cleavage; no reaching down t-shirts, turtle necks, or sweater vests!

when you're hungover as shit after a spending a night drunk as a skunk

Similar to a wet Willy, except the person sticks a finger into ones butthole.