What is your favorite line in the lyrics of the Mr. Grinch song?

“Stink. Stank. Stunk.”

^Second favorite verse.
First is: You’re a three decker sauerkraut and toadstool sandwich with arsenic sauce.

It is because the song was the outro for episode 5 of Hawkeye, right?

“I wouldn’t touch you with a thirty-nine-and-a-half-foot pole”

It looks like more than one line but there aren’t any periods:

“You’re a nasty wasty skunk,
Your heart is full of unwashed socks, your soul is full of gunk, Mr. Grinch,
The three words that best describe you are as follows, and I quote,
“Stink, stank, stunk”!”

Your heart’s a dead tomato splotched with moldy purple spots,

@Jeruba beat me to it. I love that line. It’s so specific.