A few that come to mind:
Aztruck = Aztec
Jojo = Jodel
NeverGo = Navaho?
There are so many…
Mixmaster = Skymaster
Air Knocker = Aeronca
Tea Cart = Taylorcraft
Bonny or Doctor Killer = Bonanza
Twinkie = Twin Comanche
Cherokee = Cherry Tree
Cessna T37 = Tweety Bird
Piper Tri-Pacer = Flying Milk Stool
Piper Aztec = Az Truck
Piper Tomahawk = Trauma Hawk
Debonair- Debbie
Cessna 207 – Sled
Yes the Navajo is semi affectionately called NeverGo
The MD11 in the beginning was jokingly referred to as MD41… 41 being the IATA delay code for technical problems.
The long DC8’s (61/63) were known as “Dizzy Eights” as they had quite interesting qualities in turbulence.
The DHC Dash 8 as well as the Saab 2000 had the questionable reputation as the worlds largest vibrators.
The Porsche like MD-80 will always be the Mad Dog to its crew.
Jojo for Jodel is new to me, after 31 years of Jodels.
A380 – Whale
DC8 – DC Late
787 – 7Late7, Tupper-liner, bad Dream liner,
Cessna 150 – Cessna Onefiftieth
MD-11 – MD-911
Composite lights planes – yoghurt cups
747 – queen
747SP – stupid purchase
777 – triple seven, sasquatch
Metro Liner – San Antonio Sewer Pipe
A350 – racoon
CRJ – climb restricted jet
CRJ900 – longdart
Citation – Slowtation
Learjet – Fearjet
Flying Shoebox
Jet Provost 1 – variable noise constant thrust
Jojo for Jodel is new to me, after 31 years of Jodels.
It is a term of endearment mostly heard in France, where the cult of the jojo (aka cagette à pommes) holds its rightful place well above that of the catholic church. 
