Pssh Share definition Flag Used in place of 'Yeah Right', 'As if', 'Whatever'. It is just way cooler to say it. Person 1: Dude, you smell worse than anything my nose has ever had the misfortune of coming in contact with. I'm serious. Person 2: Pssh. Pssh by Newo December 4, 2004 0 0 Get merch Get the Pssh mug. Buy Now — $32.95 See more merch