Reminds me of an exercise over northern Australia a few years back (possibly a Pitch Black).
The visiting FJ teams from the USMC, Thailand, Singapore were all using snake related callsigns, e.g. Cobra, Taipan, Python etc...
Apparently the RAAF 707 tanker crews thought it would be funny to play along with the game, so they dubbed themselves "Trouser".
I hear it had to be explained to the Thais!
Magoo