necrophillidelphia Share definition Flag A person that has sex without dead (out-of-date) Phillidelphia cheese. I had necrophillidelphia with the dead bit of cheese i found at the back of the fridge. necrophillidelphia by Winketta December 29, 2006 0 0 Get merch Get the necrophillidelphia mug. Buy Now — $32.95 See more merch