1 Monty: What about this lead on King Arthur and Excalibur? You're just dropping it?
2 Prof. Jones: You really think that's more important than stopping Hitler from being resurrected?
3 Monty: I think both of them are equally as ridiculous!
4 Minnesota Jones: The boy's right.
4 Prof. Jones: Really?
4 Minnesota Jones: We should investigate both of them.

This is what happens when you try to argue in favour of one thing you don't actually want to do to try to get out of another thing you don't want to do.

It's happened to all of us, don't deny it.