What's the street name for 4 grams of weed?

In Australia, cannabis is usually sold in $25 bags (referred to as a "stick" or "wick" or a "twent"), $50 bags (referred to as a "fifty"), quarter "quart", half ounces "half", ounces and pounds, 1/8 can also be called a half-quarter. Dealers also occasionally deal $30 bags, common in Western Australia. On the sunshine coast most people sell in $10 bags or 'tenners' or $50 bags.