results from excessive inhalation from water pipes. when you fill your lungs with so much smoke, that you can't hold it, and before you can take your lips from the bong, your lungs explode and you blow into the bong, causing the water to shoot out the carb. This causes a smelly mess, and usually results in a "party foul."
Don't hit the bong too hard, you'll choke and make it volcano!
Definitions include: anticipatory, passive/aggressive compensating strategy, adopted exclusively by opponents of Scottish independence, amounting to an unprompted, vigorous assertion of (often extreme or hysterical) patriotism.