Dishwashers need to be water-tight, ovens don't...

I too was similarly confused by the original comment at first, but I think they're referring to the fact that 6pm GMT is 7pm in London during the summer (BST), and 6pm in London the rest of the year. It seems OP and "them" are both correct in that hypothetical exchange.

That's what the meme is saying too

Are crepes not a food?

In fact, if you read it, it specifically says it can't be...

You can definitely be downvoted... @[email protected]'s comment is showing -3 points as of this writing.

I haven't heard this before. Why do you say that?

In short? Medical debt. Emergency rooms will treat you, and in some cases might offer discounted rates for patients without insurance, but at the end of the day you are still responsible for the bill, however large it may be.