Term relative to trading (crypto trading in particular) which denotes the printing of a bear flag (common technical analysis pattern) inside a bear flag inside a bear flag in an inception-like fashion. The term has been coined by members of the bear community in the great crypto depression of 2018.
Random Bull: Yo we are mooning so hard, I'll have enough money to do a Oprah -style lambo giveway to my whole block.
Random Bear: WTF are you talking about man, This is going down to 0 man, it's like Bear flagception in here.