Now that is a funny joke. >>
Yep. HehHehHeh .... Was in 1914, too. When it first made the rounds of every RFC Officers' Mess.
Actually, Willi Messerschmitt founded his company in 1925 and Messerschmitts therefore did not exist during World War One. The first Messerschmitt fighter prototype was introduced in 1935 and the ME 109, in various production models, went on to become the fighter workhorse of the Luftwaffe in World War Two.
In 1914, the Fliegertruppen were flying Etrich Rumpler Taubes.
It was not until the summer of 1915 that the first Fokker Eindeckers arrrived at the front "und da Fokkers vas actually flyin' Fokkers." :-)
