Urban Dictionary

When you are sitting on your couch, feet up on the coffee table, laptop on your lap. 4-10 hours later you are in an entirely prone position with your legs off the edge of the coffee table and your head on the seat cushion. You become completely unresponsive to your surroundings.

Loss of peripheral vision, amnesia, severely reduced motor function ability, and drooling with one eye closed are common symptoms.

Used in an argument to admit that you are wrong without admitting it so the argument is over.

A paid assassin who "fixes" a problem, i.e., offs someone who has been causing trouble for the person paying the assassin.

Used to describe the after-effect of Christmas, or the Holidays in general: 12 Days of Hanukkah/Christmas, etc. is usually a busy time, very exciting, and enjoyable. By the end of the celebrations (The night of Christmas Day/Dec. 26th) you feel exhausted and overwhelmed. People are usually groggy, lethargic, and almost depressed from exhaustion.

A phrase for use to highlight an ensuing awkward or unbelievable event. Mentioning that it is 'actually happening' helps to address either the awkwardness or awesomeness in the situation to everyone present. Therefore, can be used as a positive reinforcement to encourage the behaviour or as a negative reinforcement to discourage the offender.

A combination of the main holiday terms; Christmas, Hannukah, Kwanza, and Ramadan.
To be used in this age of correctness where people may be offended by wishing one person a seasonal greeting but leaving another person out, thereby offending their race or creed.

Xmax is a bit like Christmas, but not religious. It is the Xtreme version of Xmas and is way cooler.
It is possible to celebrate Xmax inadvertantly, so if you're having quite a lot of fun at Xmas and nobody's talking about the baby Jesus, then you're probably celebrating Xmax. Don't worry tho, Xmax is much better.