My all time favourite on this subject;
I am parked alongside one of our favourite airline's aircraft;
He calls for "push and start" with doors open and still boarding.
I am fully ready and call for "push and start."
"Stand by, the aircraft on the next stand is pushing back."
What ATC don't realise is that I have the only available tug on the airfield already connected to my nosewheel!
I let it go for a couple of minutes and then asked ATC how he was going to manage to push when I already had the only tug available connected.
Confusion and a large degree of embarrassment resulted.
I can assure you that FR do not have a monopoly on this subject.