Unless it's a navy plane then its the head!
Reminds me of the story of the KC-135 and the F-16.
An F-16 pilot was flying formation with a KC-135 (refueling tanker). Anyway, the F-16 pilot was feeling like quite a hot shot and radioed over to the KC-135's commander: "hey, watch this!" So he rolls away into a barrel roll, accelerates ahead, does a loop and rolls back around and comes back next to the tanker.
The KC-135's commander comes over the radio and says "well, that's not too bad... but watch this!" They the KC-135 drones along for 5 minutes or so and he comes back on and says "now how about that!"
The F-16 pilots says "What do you mean, you didn't do anything?!" To which the 135 commander replies "What do you mean? I just went out and stretched my legs, went to the bathroom, and grabbed a cub of coffee."