The phrase "get weird" can be used properly in many ways. It was made popular by the television show on Comedy Central; Workaholics. Generally, getting weird involves radical, spontaneous, drastic desicions and actions with no logical explaination, and performing extremely strange actions with little regard to well being, moral values, and common sense. These actions often cause spectators to become uncomfortable and question the sanity of the person. Getting weird can also be used in a more sexual context. Getting weird often involves copious amounts of drugs or alcohol, but not always.

Getting really drunk and making an ass of yourself.

Doing drugs. Using any kind of drug, alcohol or illegal substance. Geting completely "effed up"!

not acting normal, temporary schizophrenia, to make "normal" people feel uncomfortable, nervous, or awkward

To act in a strickingly odd or unusual character; Unique actions and thoughts; thinking outside the box

The act of smoking spice, potpourri, incense, or any other JWH substance, leaving the subject with a high that is neither enjoyable or unpleasant, just weird.

To snort/do cocaine.