Dear God: Today I am grateful for the interrobang

Today's punctuation lesson:
This ?! is called an interrobang.
Who knew?!

Here are the examples provided by Wikipedia. Go here for more info.

• How much did you spend on those shoes?!
• You're going out with whom?!
• They did what?!

I wish I could take credit for this discovery, but I stole it from Cathy's Facebook update.

Next punctuation lesson: Who can tell me what Guillemets are?