I used to get these a lot when I was flying the T-38 from Holloman (F-117 support). The black paint job used to throw everyone off.
What kind of jet is that?
It's a T-38.
Does the Air Force still fly those?
Uh, yeah, we still have a few hundred of them.
I thought maybe it was your private jet.
I wish...
Also, there was always some guy, always too smart for his own good, who would walk up, point to my airplane, and declare, with much importance,
"That's an F-5!"
Me: "Well, no, it's actually a T-38."
Him: "Are you sure, it looks just like an F-5?"
Me: "I flew it in here yesterday, but I guess you know better than I do"
Cheers