Twitter Stickers

Definition:

Twitter sticker is another name for a bumper sticker. They both convey an opinion, in a minimum of words.

Exemplification of usage:

Me: OMG, that's hilarious! Look at that guy's bumper sticker! Him: What does it say? Me: It says "How am I driving? How does a car really work? How does a loving God allow such much pain." Him: Well, he certainly knows where he stands. Bumper stickers - the original twitter! Me: They're twitter stickers.