Youfuckinkiddinme Share definition Flag Phrase used to feel sudden wonder or amazement. Phrase used to express being surprised or astonished. Youfuckinkiddinme, Brett Favre ended his 297th consecutive starting streak? Youfuckinkiddinme by SteppinRazor December 16, 2010 0 0 Get merch Get the Youfuckinkiddinme mug. Buy Now — $32.95 See more merch