Jatholic Share definition Flag Being both Jewish and Catholic at the same time, retaining qualities from both. Tom: "Who does she think she is celebrating Christmas and Hanukkah?" Fred: "Lay off man, she is Jatholic." Jatholic by The_Chris October 24, 2012 0 0 Get merch Get the Jatholic mug. Buy Now — $32.95 See more merch