pewapahee Share definition Flag A turn of phrase used loosely in Scotland to describe a state of mind, usually happy/excited. Thinking back to the exciting night the boys had the night before and remembering how fun it was, one says under his breath "Pewapahee" with a smile on his face. Pronounced as spelled. pewapahee by Prawn93 January 10, 2012 0 0 Get merch Get the pewapahee mug. Buy Now — $32.95 See more merch