I particularly enjoy ones on the variation of Stand By
Jokejet123: standingby for lower
You wouldn't go to McDonlands and place your order with "I'm waiting for a Big Mac" now would you? Just ask for it.
Jokejet123: Looking for lower
Most likely beneath you. Do you want a descent?
Control: Jokejet123, Standby
Jokejet123: Standingby
Great to know, thanks. Because otherwise you would've switched off the radio?
Germanjet: You're on gaard
Germanjet2: You're on gaard
Usually repeated ad nauseum until everybody in Bavaria has had their go. Points given for those to point out the infraction within 2 seconds. I'd say it's likely the error will be noticed by the pilot himeself when he doesn't get an acknowledgement from the controller. But nice of you to help nonetheless, because you were being helpful rather than hectoring weren't you?
Skygod 1: Uuuuuuuuh, London, Skygod 1 descending etc
Conjures up the image of self importance or being a slack-jawed hillbilly. Do try to keep your mouth closed when you eat Cletus, there's a good boy.
Skygod 1: London, the Skygod 1, requesting descent.
Oh, the Skygod early afternoon flight in from Alicante. The definite article is genuinely used for such, rather than your two-bit flight in from the costas. Reserve for something noteworthy.