gapski Share definition Flag A light weight drunk, participating in downhill skiing in GAP apparel.Also, name used to call a girl who hits the ground after two drinks. 1) a. Does that guy know what he's doing?b. He's definitely skiing drunk. And wearing nothing but GAP clothing.a. He's such a gapski2) a.Woah! She just hit the floor and she's only had one drink!b.Haha! That's gapski for you! gapski by v3xnorm August 31, 2011 Get the gapski mug.