[agrandis]

Great thread!

There's I [heart] my dog.
I [spayed] my dog.
I [club] my dog.

[lavrenti]

This is my favorite:

"If You Leave Me, Can I Come Too?"

[ALASKA]

Here in the Great White North, I've seen one that says..."I (club) baby seals". I've got to get or make one.

[Hank Rearden]

I [heart] my dog.
I [spayed] my dog.
I [club] my dog.

Then there's the Li'l Vandal's version: it's a round image of a big wood screw, to be pasted over the heart image in your first example above.

[HighWheeler]

I My Wife.

I My Cat

(I'm not married, can you tell?)