Yappetite

–noun
1. a desire for excessive food or drink: I have a large yappetite for lunch today.
2. a desire to satisfy any bodily need or craving.
3. a desire or liking for anything unhealthy; fondness; taste: an yappetite for power; an yappetite for pleasure.

I think he can't control himself, He has an large yappetite for greasy food.

Yappetite

How badly you’d like to speak.

Debbie has an insatiable yappetite, no matter how much she speaks, it’s never enough.