Bah is defined as a word use to say a statement is false. Bah could also be used in a sarcastic way to prove someone wrong. The word "bah" originated from Ryan Patrick Urv, from New Jersey. Ryan copy-wrote the word once established. The word originated from weird sounds he would say to his friends when he believed they were telling a false statement.
Ryan- Yo you want to play ball today?
Anonymous- ite im down. Are you ready to lose and shit?