Make a small bowl out of aluminum foil and stick it on the top of the 2ltr with the bottom cut off. Fill a bucket with water and stick the bottle into the water until it is underwater up to the bowl. Lift the bottle while lighting the bowl to fill the bottle with smoke. Unscrew the cap and suck in the smoke.

Be careful you can smoke a lot of pot this way, my first time I smoked 3 bowls worth in one hit.

A good way to get fucked right the fuck up.

Also check out www.dictionary.com and notice the difference between Buy and Bye.