Not quite to do with ATC, but funny anyhow.
A friend was a First Officer on a Jumbo and they were waiting for a slot... reading the newspapers. It is pissing down outside.
F/O sees the pushback controller, standing patiently, getting soaked. He tells the Captain that the poor guy is drenched and he might want to wait in the tug for a bit...
Captain flicks his intercom switch...
Capt "Flightdeck to ground"
Push "Yes Sir, go ahead"
Capt "If you had worked a little harder at school, YOU would be sitting here in the warm and dry, reading the newspaper, wouldn't you?"
Push "Thank You Sir"
Nice Man!