It came from the future for their rears! Super hero Seth Gold and his rival Blue Angel fight a perverted sex machine sent back from the far off future to punish gays everywhere. With many a gay man's rear on the line, they can't afford to fail. However, the machine has a secret and they are about to discover it for their personal pleasure and others.
This and other similar stories can be found in the 'Manly Men Collection 6'.