Lateral Thinking Puzzles - third time is best!

No.

I like this better than the real solution!

Hint: only the last panel of the strip in the newspaper was accidentally printed upside down.

Is the answer to do with the thickness of the news paper page?

The ink on the paper?

I does seem like a rather Nancy thing to do, I think.

No to all.

Did Nancy go to the park to hang upside down in the playground, so she could read the last panel correctly?

reply to Cheesesteak:

Did Nancy go to the park to hang upside down in the playground, so she could read the last panel correctly?
No.

Did it involve sunlight shining through the page?

Did she need to verify that the world was still right-side-up?

Does the gag involve Nancy hanging upside down at all, for any reason?
Given that we don’t know what the comic strip in Nancy’s newspaper portrays, do we need to figure out how we can tell the one panel is upside down?

No to all

reply to dirtball:

Does the gag involve Nancy hanging upside down at all, for any reason? No.

Given that we don’t know what the comic strip in Nancy’s newspaper portrays, do we need to figure out how we can tell the one panel is upside down?
No. You need to figure out why, when Nancy saw a newspaper comic strip with the last panel printed upside-down, why she then went to the park.

My thought was that if we don’t know what the comic strip portrays, it’s not clear to me how we, Nancy readers, know the panel is upside down. So what I was trying to get at is, will figuring that out help lead us to the answer?
Or would it just be going off on a wild goose chase?

It starts off in panel #1 with Nancy reading the newspaper. In panel #2 she notes in surprise that one comic strip has had its last panel accidentally printed upside down. She states her reason for going to the park in panel #3. In panel #4 she goes to the park.

See above.

There is a logical reason (ok comic strip logic, but what the hey!) for Nancy to go to the park as demonstrated in panel #4.

Is there wording in the comic strip that reads differently upside down?

reply to Teuton:
Is there wording in the comic strip that reads differently upside down?

No.

Okay I’m confused. Is this story of Nancy depicted in the comic strip itself? Maybe I’ve missed this from above.

Biotop is recounting a joke from a comic strip called Nancy, but that is apparently not important, it could happen in real life.

Is playground equipment involved?

Did she intend to use a slide (or some other shiny surface) as a mirror?