Obviously not, who said it was?

It is checkmate look at the board!

He turned the coordinates around. Hil-fricken-arious.

If you didn't solve it look at the board!

It's still not checkmate seeing as it's not a legal game.

lol

I made it

play in the garden don't broke any thing babies and drink milk at night then sleep to go to KG1 ... 

Let's not get bogged down in technicalities; it feels like checkmate and that should be good enough for anyone.

this is an example of what you call "upsidedown chess":D

Feeling like it's checkmate is what made me lose my queen in the first place 

you had a lot of time on your hand, I saw this before I went to work this morning.

1)first thing you flip the board

2) you swap pieces from one side to the other

3) you switch the king & queen position

still don't understand why it would give checkmate though but that was the end answer

nice trick
in any normal board look like this

Wait, you really don't understand why it's checkmate? >_<

It would be checkmate because the pawns are still going in their normal directions on the coordinate plane.... 

Couldn't the black kings pawn capture the white knight?

By flipping the board you made the pawns go in the other direction.

The Pawn

Pawns are unusual because they move and capture in different ways: they move forward, but capture diagonally. Pawns can only move forward one square at a time, except for their very first move where they can move forward two squares. Pawns can only capture one square diagonally in front of them. They can never move or capture backwards. If there is another piece directly in front of a pawn he cannot move past or capture that piece.

I get now, because the knight wasn't in front of the pawn it was behind the pawn

No, they are still going in the same direction -- according the the coordinates, anyway! Our eyes say differently. The pawns cannot capture because that would force them to move backwards.

Look at the diagram, and ask yourself:

Which coordinates?

It's just the way you look at it, it doesn't really matter :)