When you put a cotton swab in your ear and scrape it around a bit to get the wax out. That shit is a delight.

All kinds of physical sensations work like that.

Pooping out an extra firm poop after having trouble. The pee after you've had to hold it in forever. Finally scratching an itch after a delay. There's something about our brains that hates delaying gratification, so when it happens, we get that dopamine hit a lithe harder. Same with your example; a delay of relief followed by the relief of both the original sensation and that of struggling with it. That one-two punch is like a drug. Or a mini orgasm, depending on ones wiring.

Side note to that, I've never run across "horking". I've seen hawking, hocking, and even hacking, but never horking. I like it though!

I too have been sick for days and have been enjoying my loogies. Bonus that they usually mark the end of the illness, at least for me.

Peeing when you have drank a lot of liquid.

I typically drink at least 100 ounces of liquid a day, and sometimes when it hits, I'll just like, go to the bathroom and start frying bacon.

I wouldn't say it feels good, but, like, the relief is palpable.