For you see, I have in my possession, a pen.
But as well as that, I also have an apple.
So if I were to put them together as one
I would have the result of
Apple pen
Now, I am in possession of another pen
And in possession of a pineapple
I put them together like the apple pen and I am left with
Pineapple pen
Finally, I put the apple pen, and the pineapple pen, together.
I am left with,
Pen pineapple, apple pen.
Or for short, PPAP