Back on The Simpsons season four, when Ralph Wiggum was just a dumb loser—before he evolved into the lovable mildly retarded kid we cherish today—he fell in love with Lisa Simpson because she was the only kid with room enough in her bleeding heart to give the reject in the class a Valentine's Day card. "I Choo Choo Choose You" is such a classic that it really should be sold in stores. But since it's not (at least to our knowledge), you can go here, and print out a high-res version for your Valentine today.