Those are good; when I was in Washington, DC some dude was picketing outside the White House. It was a veteran holding up two signs, but I can't remember what they said. They weren't particularly funny or striking, but it was different. I am pretty sure he stood in the same place the entire day only to turn one way or the other so people could read his signs.
However, it will never top the sign my friend once saw at a wrestling event:
"A Leprechaun Stole My Whiskey"
The One, the Only, the Incomparable Mercer Boy.
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