In article .com,
RicodJour wrote:

wrote:
In article ,
TWS wrote:
Can anyone give me the reason a 'frog' is called a frog?

Thanks in advance,
TWS

I always thought it was just because of the general wedge-like shape
and it's resemblance to a frog sitting. In fact the term "frog" is not
too uncommon to describe similarly shaped parts in various tools and
machinery besides planes.

I must say, though, that when I read the subject line of your post,
the first thing I thought was that this was an OT post with a joke
about a frog on an airplane.

Hmmm. Good point. Free bag of planer chips (great lightly salted!) to
the person who comes up with the best punch line.

How about:
1) "Because they wouldn't let him fly under an assumed name"
2) "Because it would be impolite to call him 'dinner'"
3) "Because his friend the Wop/Chink/Pollock/{other ethinc identifier}
_said_ to"