Cheesy jokes

I received this collage. The sender was sorry (she said) for not sending something cheesy... But wait: is this not a cow? Or maybe a cowstamp, as it is among all this queenly stamps?

And I cannot help copying here the cheesy jokes written on the back:

What do you get when you cross a smurf with a cow? Blue cheese, of course!
What cheese should you use to hide a horse? Mascarpone!