When i had a brown recluse spider bite. those bastards itch like crazy, and even though i coulda died, itching the swollen area that encompassed my entire like was so heavenly almost orgasmic, almost. it was below an orgasm, and above taking a piss after holding it for a while.
most torturous itch is when on occasion the sole of my foot will itch, so it's either leave it alone and annoy me immensly, or scratch it, and tickle myself at the same time, driving me nuts. my feet are very sensitive, lol.