Elmo's Brother Share definition Flag pretty much a kid or adult that is hell'a ugly and deformed, basically this person looks like a human version Elmo. Liam: Hi Pete: eww, what the hells wrong with your face, you look like Elmo's Brother Elmo's Brother by Horace004 April 11, 2015 0 0 Get merch Get the Elmo's Brother mug. Buy Now — $32.95 See more merch