Last Man on Earth Sneak Peek: Phil's Mystery Ailment Is... Bad Gas?

The Last Man On Earth is having anything but a silent night this Christmas.

TVLine has an exclusive clip from the fall finale (Sunday at 9:30/8:30c, Fox), in which the survivors rush to Phil’s aid after his collapse during Secret Santa.

Is appendicitis causing his pain? Is it one giant fart just waiting to rip? Before we can find out, Gail — aka the “chef from a three-star restaurant in Wilmington, North Carolina” — completely loses it on Tandy and Erica.

Press PLAY on the video above for an exclusive look at Sunday’s “Christmas,” then hit the comments with your best guess for Phil’s diagnosis.