Massive cheat meal impact?

resiIient

My good friend diets all week in a daily calorie deficit.

For example on Friday nights he eats:

4-5 slices of pizza
1 calzone (large size)
8-10 wings
1 B&J ice cream pint

With a regular breakfast and lunch prior.

He thinks this will help him reset his metabolism. I don’t know his results yet, but wouldn’t this simply wash away any 3-4K weekly calorie deficit? He was saying the body doesn’t absorb it all at once but I’m confident he’s just slowing his progress to snail speed.