Asparagus Syndrome Share definition Flag Asparagus Syndrome is a mental illness that causes one to believe they are the Green Giant. Billy: IM THE GREEN GIANT! -stomp stomp stomp- Jane: Dude, I think Billy has Asparagus Syndrome. Asparagus Syndrome by Glitchx April 6, 2009 0 0 Get merch Get the Asparagus Syndrome mug. Buy Now — $32.95 See more merch