Spare tire, Jack. What's after that?

"Spare tire" means knowing that it is impossible with the other party, knowing that the other party does not love themselves and is good to the other party.

"Jack" means that women only use it when changing the spare tire, even if the spare tire is worse.

"Pump" means that women will only think of you when they have an abortion, so you are not even as good as a jack.