Lockdown: I warn you, Mr. Attinger of Earth, an alliance is a contract, and contracts, like humans, expire.
Attinger: On this planet, we have a saying. "The enemy of my enemy is my friend."
Lockdown: I also have a saying. "I don't care."
This bold line sounds odd to me. Contracts can expire, but humans can expire?
I kind of think that's a typo and the line should be like humans' (contract).
What do you think?