A term used to describe a wiigame that requires an excessive amount of shaking or swinging the wii remote.
It's a combination of the words waggle and fantastic.
"Have you tried playing Bleach: Shattered Blade? It's waggletastic."
"What happened to your arm?" "I played too many waggletastic games, my doctor says no wii for a month."
Having a fist inserted into your anus for the first time, causing you to yelp 'Wagamama'. Originally from a japanese porn video that circulated the internet in the late noughties.
-'What was that noise?'
-'Dude, I think that girl totally just got her Wagamama Cherry popped!'