I received a "trick" question. While we were walking away from the plane after the checkride, the examiner asked me, "How would you know when all the fluid has leaked out of the compass?"
I thought I knew it all... I told him the card would be leaning, the card would not move during turns....etc....
He told me, "No. You can tell when all the fluid has leaked out because it will be all over the glare shield...."
For the oral portion....
1. Be sure to wear your best leather jacket, the one with the top gun patch on it.
2. When you walk into his office, toss your logbook onto his desk with a loud plop and tell the examiner that he might want to look at this. Be sure to have one of those huge, I am a real pilot leather logbooks.
3. Wear a big aviator watch. Look at his puny Walmart watch, look at your watch, sniff loudly while looking at his watch....
4. If you don't know the answer to a question, just tell him that your instructor told you that subject isn't important.
While at or in the airplane,
5. When at the plane, tell the examiner that you know the plane has enough gas. Don't tell him how you know....
6. When the examiner retards the throttle for the simulated engine failure, slap his hand and restore power....
7. When the examiner ask you why you didn't wear your seatbelt, tell him that seatbelts are for sissies, real men don't use seatbelts...
8. Most importantly, ignore all the above advice. Just relax, don't dig yourself into a hole trying to answer a question. And don't be afraid to ask questions.
All of my checkrides were learning experiences, even the ATP checkride.