So, I'm standing outside Morrisons waiting for my family before dinner. As I'm a biker I've parked on the main concourse near the entrance, showing off my newly polished pride and joy.
Enter a low paid trolley boy.
"You can't park that there!"
"Yes I can."
This flummoxed him somewhat. "No you can't!"
"The evidence in front of you would suggest that you're wrong - I can park here, as there's no barrier prohibiting me from doing so. I think what you meant was 'you shouldn't park there'".
"Well then I'd suggest two things. I suggest that in the future you use the correct grammar, and that you feed back to your superiors the lack of a motorcycle parking area. Now go."