that's weak Share definition Flag generally unimpressive or how some people would put it, "sad" Person 1: I got a B+ on my test. Person 2: JUST a B+? That's weak. that's weak by xLxIxNxDxSxAxYX February 25, 2008 0 0 Get merch Get the that's weak mug. Buy Now — $32.95 See more merch