It was based on a mistranslation though. In English these planes were never described as "invisible", it was always "stealth". Since other language don't have a separate word for "stealth", they became "invisible". A native English speaker would be a bit hard pressed to understand the humor of that joke.
Hahaha, that's a fantastic find. Thanks for brightening my day a little.
For those who are not sure whether to click on the link or not, here's a little pearl from the former Commander in Chief:
"I was asking the Air Force guys, I said, how good is this plane? They said, well, sir, you can't see it. I said, yeah, but in a fight — you know, a fight — like I watch in the movies — they fight, they're fighting. How good is this? They say, well, it wins every time because the enemy cannot see it. Even if it's right next to it, it can't see it. I said, that helps. That's a good thing."
