facebook thumb
fb'er 1:saw a cow today fb'er 2: 👍 fb'er 1: ahh not the facebook thumb
it is the tumb up button used in facebook chat that is only used for sarcastic purposes
"fb'er 1:saw a cow today fb'er 2: 👍 fb'er 1: ahh not the facebook thumb" What is the definition of "facebook thumb"?