"thong", same explanation as 'ankles' above.
"the rock" with several prangs and a name like 'stone' ?
Dust devil reminds me of one FSU operator from Kununurra, way back when, with the monica of 'malfunction'. (is it the same dude dd?) He was an esteemed member of the local afterburners club. a very funny man with a distinctive voice on the HF static, but a thorough and highly regarded professional by all from Karatha to Cloncurry. one only had to cough and he was onto you in case you had a problem.
"Toucan" adminstered in favour of a KH4 tourist driver by a very hard case parks ranger. He used to get your attention, lean toward you and slowly move his index finger from brow to mid air about twelve inches south west of his chin, then back up to his moustache line, while softly administering the 'toucan' word, then he would give one a surreptuous nod and wink, and slowly disengage your direct communication. get the picture? yep the dude had a big beak for sure.
"picket" named for a bad mistake he made once by lifting a fence picket into the path of an oncoming '47 blade while shutting a cockies gate under the rotor disc. It didn't damage the blade, bent the fence picket double and should have taken his silly head off, but it didn't scratch him.
Later seen and heard as coey on one of those russian models in NG, (ahem - both types, those with legs and those with blades) but refuses to answer the monica for a chat on the local RT, I've heard. He'll keep.