The NEPA gape Share definition Flag The tendency of anyone from NEPA (Northeast Pennsylvania) to leave there mouth open in a gaping like manner. Aww the poor kid has the NEPA gape. Ex. Gerry Macnamara. The NEPA gape by ipushmiraclewhips March 9, 2009 0 0 Get merch Get the The NEPA gape mug. Buy Now — $32.95 See more merch