Australian slang synonymous with American terms such as "hipster" or "scenester".
Those girls are such coolsies with their bangs and iPods.
מאת Jon Wilcox 5 בנובמבר, 2005
A "cute-ified" term for cool; similar to calling a sip of beer "a sippy of beer".
It's really coolsies that you went to the mall.
מאת Nora Kay Figi 8 באפריל, 2005