That something, person or thing is "wicked".
New Englanders are notorious for frequently using the term "wicked" in order to exaggerate a compliment towards something. It is believed that the term "iwxked" evolved from the mumbling from the phrase "it's wicked" or a derivative of that phrase.
It's wicked" It looks "wicked"
Dang, that dude just paid a shit load for that tattoo. He'll be broke for a while, but at least the tattoo's "iwxked"!