While innocently perusing the internet in search of an appropriate, gardening-related Father's Day gift, I happened upon this gem: the venerable Mooning Gnome.
You must read the reviews, for they contain high levels of hilarity:
I got the mooning gnome as a christmas gift and it is my least favorite. It is smaller than the standard gnome and made of plastic. I live in Vegas and after two summers my gnome lost all color and turned a grayish black color. You get what you pay for and as a gag this is kind of fun but to a gnome collector it cheapens your yard.
Yes, the poor quality of the pantsless gnome is what is cheapening the yard, not the fact that there is, in fact, a dwarf with his ass hanging out stationed there.
Mooning Gnome too gauche? Try the item "Frequently Bought Together" with it: the Squatting Gnome. Nothing conveys an air of sophistication and elegance quite like a tableau of a miniature man defecating on one's lawn. Majestic!