the need to go to the restroom

Pot has several Australian slang meanings:

1. (noun) - marijuana. There are already a million definitions here, but it is worth mentioning that pot is considered a bit old-fashioned these days. Your old man would call it pot or grass. More commonly called weed, dope, hash or shit by most.
2. (noun) a toilet, and really only used in the phrase in the example below, meaning to hurry up and do something or bugger off, as long as you get out of the way.
3. (noun) the standard sized beer glass used in pubs in the state of Victoria. Holds 10oz or 285mL.
4. (noun) a cylinder in a car engine, usually preceded by the number.
5. (verb) to score a goal in football. Snag is another. Probably stolen from snooker.

Something you put your spaghetti in before you cook it.

To become higher than high.

The laziest word to describe the consumption of marijuana.

The most amazing song in the world, by the American group of gods referred to as Tool. If you don't plan on listening to this orgasmic song, you are a Bob Marley wannabe mother fucker and therefore should kill yourself.

Use in response to PYT, meaning pretty young thing. You say pervy old thing, POT.