1 definition by MikYahRose
Achronym of: General Impression of Size and Shape. ie: How you recognise a familiar person from a distance from their size and shape.
Hey man, look at that guy over there, swinging his hips and tossing his hair. He looks like my mate Jake, i can tell from his 'Giss'. His 'Giss' looks familiar.
by MikYahRose May 23, 2009