shagadelic baby, yeah! Share definition Flag The phrase coined by Austin Powers star Mike Myers as he 'compliments' his female assistants. Austin: "Fancy a shag?" Girl: "...what?" Austin: "Oh, you're shagadelic baby, YEAH!" shagadelic baby, yeah! by Crazy Axer July 16, 2009 0 0 Get merch Get the shagadelic baby, yeah! mug. Buy Now — $32.95 See more merch