The act of being so incomprehensibly high that one loses all sense of reality and the world blends to create a singularity. Typically used to describe the feeling after a bong rip when you take a step into another dimension. One of the more extreme words that come after the prefix "ker-" (I.e kerklanked and kerblazed)
After Jimmy took the bong rip, he entered a state of being kerblasted and lost all sense of reality. He woke up 5 hours later in a dumpster in New York City. He lives in Hawaii.
When the person receiving a blumpkin drops a huge turd and the person giving the blumpkin gets a huge splash of shit water on the underside of their chin; When the person giving a blumpkin gets water splashed on their face from a dropping or exploding shit.