Sen. Chuck Grassley weighs in with the world's shortest debate analysis

What does it mean? Twitter has some theories:

G-O and Bingo was his name-o! “@ChuckGrassley: N”

— Josiah Neeley ? (@jneeley78) October 4, 2012

"@ChuckGrassley: N" @ChuckGrassley Pretty racist letter. #debate

— GalvestonCounty Dems (@GalvCountyDems) October 4, 2012

https://twitter.com/KevinWGlass/status/253682522607726592

Profound “@ChuckGrassley: N”

— Shawn (@HawkeyeShawn) October 4, 2012

@ChuckGrassley today's #debate brought to you by the letter…

— Andres Jauregui (@dutchvowels) October 4, 2012

wow did @ChuckGrassley just tweet the N word??????????????

— FIPSmode Squad (@anthonypants) October 4, 2012

https://twitter.com/diymediadotnet/status/253682379653271552

obama RT @ChuckGrassley: N

— Gavin Aronsen (@garonsen) October 4, 2012