Knock Out Your Look with the "Sign The Contract, Big Boy" Mike Tyson Tee. Iron Mike Tyson is back in the ring...well, sort of. This legendary boxer's iconic trash talk is now on a must-have t-shirt, featuring the unforgettable quote: Sign The Contract, Big Boy. https://dribbble.com/shots/23798556-Mike-Tyson-Sign-The-Contract-Big-Boy-Shirt