Monkey Steamer Share definition Flag Monkey steamer is a person who pisses you off and you have nothing better to call them. It is used as an insult. Hey tony, your a monkey steamer. or F*ck you bro your a fat as monkey steamer. Monkey Steamer by iacman June 16, 2010 0 0 Get merch Get the Monkey Steamer mug. Buy Now — $32.95 See more merch