Two half-sisters, in black bodysuits, face off in front of their unsuspecting brother. The argument: who has the better butt? Unable to decide, the brother takes matters into his own hands and seduces both sisters to see whose ass is superior. He quickly realizes that both sisters have luscious derrieres that turn him on and he can't choose between them. Will the brother find out who has the best ass? Watch the sex video to find out.