Suss Flu Share definition Flag - A terrible hangover, often resulting in the inability to arrive at work on time or at all. - "No way I'm gonna make it in today, I gotta severe case of the Suss Flu." Suss Flu by HMX April 7, 2006 0 0 Get merch Get the Suss Flu mug. Buy Now — $32.95 See more merch
