1) Smoking marijuana, called "Chief" because of the peace pipe.

2) To "Chief" something in a friendly manner is to take ownership of something that isn't yours, but doesn't harm anyone.

3) To own someone/something, usually related with the above definition.

4) To "Chief" something in a negative manner is to take ownership of something that isnt yours, but usually annoys someone. (UK slang)

5) To sarcastically call someone a superior.

when a girl is a straight dime or when a specific body part of a girl is just amazing.

For one to be recognised as a "chief" you must either be a cocky and brash "know-it-all" or you do things or say things at unappropriate times.

(verb) to chief: to smoke marijuana, pot, refer, or bud. This is called "chief" because the indians smoked lots of tobacco and various marijuana plants and the Chief always got the first drag. This word was revibed and defined by Bobbles of NYC.

someone who wants to be in charge but has no idea what they are doing
It is a dirrogatory term(insult)

verb
The act of writing on someone using a sharpie when they are drunk and passed out.

A chief is an uncool person. A person who might shame you up if you went out to a party with. A chief is someone who might wear distressing attire or carry on in a nerdy or geeky manner. The chief is more than this though, sometimes related to a fool a chief can always be relied on to 'chief' it up.

Chief is often accompanied with a modifyer:

Bare chief
The living chief
Chiefton
Chiefton Ras
Chefferton McStanley

I've even heard it said with an affected air:

You absolute chaif!