To go to a place i.e a club or pub and mingle with women or men,with the intension of pulling one of them.Or mearly to go into a place an hav a really good time.
Lets go to Yate's and get amongst it
Lets go over to them fit birds an get amongst it
Used widely throughout the Australian medical student and broader community to express a desire to get involved with or get crazy at an event, particularly Convention. Widely abbreviated to GAI. Can be used in a larger sentence or as a stand alone phrase with the intent of g-ing up
A command to participate unreservedly; to make use of something without restraint. Go for it!
Also, 'Get Amongst It' is a very cool song by a vegan band called Vegan Band.
A: Can I try some of your soup?
B: Yea bro, get amongst it!