Definitions by SavageWordDict.

Yikest

Yikes to the fullest extent; saying ‘ohmygod’, ‘wow’, ‘damn that sucks’ and ‘sucks to be you’ in a funny manner

“Brage and Kalum failed that test and that’s yikest!”
“Woah the devil added you on Snapchat

that’s yikest!”

Having a big booty or when someone’s butt looks fat/ good

“Daisy’s caked up!”
“Have you been working out, you’re caked up!”