I do wanna propose to him, but i dont know how, i wanna do something kina crazy to surprise him....help?

hes a bull rider, he loves rodeos, but hes really not a cowboy, he grew up in the city, so i kinda wanna combind his love with rodeo in the proposal somehow, and i cant think of anything, besides writing will you marry me on the side of one of his bulls,corny i know.