A World War II pilot is reminiscing before school children about his
days in the air force. (Joke best delivered with a good thick accent)

In 1942, he says, the situation was really tough. The Germans had a very
strong air force. I remember, he continues, one day I was protecting the
bombers and suddenly, out of the clouds, these fokkers appeared.

(At this point, several of the children giggle.)

I looked up, and right above me was one of them. I aimed at him and
shot him down. They were swarming. I immediately realized that there was
another fokker behind me.

At this instant the girls in the auditorium start to giggle and boys
start to laugh. The teacher stands up and says, I think I should point
out that Fokker was the name of the German-Dutch aircraft company

Thats true, says the pilot, but these fokkers were flying Messerschmidts.