A combination of the words "smart" and "serious" usually used in a sarcastic form. Originates from the sentences "are you serious?" or "are you smart?" indicating that the answer to the subject is obvious.
Sally- "I locked my keys in my car! And I'm gettingworried because it's starting to rain and the top is down!"
John- "Are you smearious?"
This word came to be when a group of friends were hanging out at a bar and one of them mentioned that they'd recently read a statistic that reported how every time the Special Olympics are held, someone dies because they push themselves too hard. People immediately began to laugh at this but also questioned themselves for doing so because it's clearly a tragic thing. Yet it seemed funny somehow. Sadlarious.
One of the most annoying critters in the Star Wars galaxy, Salacious B. Crumb was the favored jester in the court of Jabba the Hutt. The beak-nosed pot-bellied miscreant had a habit of breaking into a nerve-wracking cackle whenever the mood struck his flighty little brain. The creature had a knack for mimicry, and would pester many by constantly repeating what was said to him.
Crumb had an affinity for tormenting Jabba's other employees, most notably the Hutt's interpreters. When C-3PO became Jabba's property, Salacious antagonized the golden protocol droid mercilessly. As Luke Skywalker freed his allies, Crumb physically attacked Threepio, ripping the droid's eye from its socket. Fortunately, R2-D2 arrived and used his electric prod to shock the little beast. An angry Crumb retreated, and died moments later when the sail barge exploded.