Lewis's examples were to suggest the existence of universal, agreed upon standards of morality, and that when two people came into conflict it was not over the existence of the rules, but in who had actually violated them.
I agree whole heartedly with Lewis, and I think had he lived another decade he would have observed a counterculture that also recognizes the same rules and standards, but finds it fashionable to flaunt and defy them.
The TOSH.0 allusion is lost on me.