1.
Chuck: "Why so glum, chum?"
Eric: "My dad died a year ago today"
Chuck: "Oh... happy saddiversary dude. I'm sorry"
2.
Larry: "Happy saddiversary Sean!"
Sean: "Huh? What happened today?"
Larry: "Remember last year when you finally dumped that crazy chick you were dating? The one who always bit you while giving head?"
Sean: "Oh yeah... Cheers!"
The act of removing all clothes and hanging from hands and feet from the luggage racks on a bus/coach, like someone in freefall. Can be performed with a cocksock, which can then be ripped off, much like pulling the release cord on a parachute.
Mexican Skydiver is when you take 30 or more ounces of Margarita and you drink it all at once, usually through a beer bong. This method was invented by Droy of Albuqerque