To choke when everyone is counting on you; To be a giant failure at accomplishing a sure thing; A reference to ex-ravens kicker Billy Cundiff missing the game tying kick in the 2012 AFC Championship
To miss and choke a NFL game winning or saving field goal wide left from a close distance, such as inside the 35-yard line where most professional kickers make every kick. Applied more liberally, to miss or choke something very easy that you are expected to always make.