Criminal Sentence 440: The Krabby Grammarian

Overheard on SpongeBob (in this snippet, Mr. Krabs is talking to himself):

"How does it feel to be in the hole, so to speak, Mr. Krabs? Not well, I suppose."

Nope. It doesn't feel good, Mr. Krabs.

The idiom here is "it feels good to such and such." You would never say, "It feels well to such and such."

For a useful discussion of "I'm good" vs. "I'm well," check this out.