eifelnickelfissen Share definition Flag Eifelnickelfissen is when you burp and a little puke gets in your mouth. Did you just eifelnickelfissen?Yes, spaghetti doesn't taste so good the second time around. eifelnickelfissen by Indiana Joens March 9, 2021 0 0 Get merch Get the eifelnickelfissen mug. Buy Now — $32.95 See more merch