Busboys rhymes with:
attaboys, cowboy's, cowboys, cowboys', homeboys, playboy's, schoolboys, alloys, attaboys, convoys, cowboy's, cowboys, cowboys', homeboys, playboy's, popejoy's, schoolboys, tolstoy's
Busboys sounds like:
backpack, backpacks, backups, bagpipes, bake-offs, bespeak, bespeaks, biceps, bishop's, bishops, bishops', bookshops, boskovich, bukavu's, bukovsky