The act of a man lifting up his large, floppy abdominal pannus before receiving fellatio. Immediately after coitus he releases the sweaty mound and it collapses onto the face of the unsuspecting female while she is still attached to his flaccid member.
Jackie was always a fan of hookin up with the big fellas... until Ron decided to crush her face with the catavalanche.
When someone at a funeral drops or knocks over the casket and the body of the deceased happens to come out. Although rare in it's nature, reports show that it can and has happened.
When you make so much money that no matter what your haters say, it's irrelevant because you've caused the cashvelanche. You've opened the gates of talent and made so much fucking money that not even the most ratchet of haters can bring you down.
It's winter, it's been dumping all night, and you now have a foot of snow on the roof of your car. You're driving somewhere, hit the brakes, and all the snow on your roof slides forward and buries your windshield. You've just been hit with a carvalanche!