PeteRillo Share definition Flag A nickname used in the music industry for rappers who either sell out, are attracted to the same sex, or are whack overall. Did you guys hear the new artist they signed? I heard he's a PeteRillo! PeteRillo by yaboiiiiii February 25, 2020 0 0 Get merch Get the PeteRillo mug. Buy Now — $32.95 See more merch