Dr. Emil Reingold: Mickey and Mallory know the difference between right and wrong, they just don't give a damn.
Son: What the hell is that?
Redneck's Buddy in the Diner: A bitch out of hell, son. Take a run at her, kiddo.
Mallory: You killed life.
Mickey: We're not killing anybody on our wedding day.
Answer: Yes, it definitely does not look like a key lime pie. I suspect that because Woody Harrelson is a strict vegan, that it is a substitute made with vegan ingredients.