Now, the Captain who was a US citizen on contract, and both engineers failed to see much amusement at this pronouncement
No wonder!
...and without hesitation borrowed/stole/impounded the cowlings for scientific examination.
The independant test findings resulted in our being personally handed letters of mild commendation, a cup of tea, and probably a biscuit.
Good for the crew concerned.
Well done.
My opinion...never take cr*p from anyone when you know darn well you are right.