It is when you smoke marijuana and you get extremely high. You are BlazeKrieged.
It is a play on words, with the 1917 attack. When the Germans use forceful tactics against the British called "Blitzkrieg".
Blazekrieg refers to getting "destroyed" or "bombed".
That weed hit us like a like a "blazekrieg."
After Kenny left the party he was "blazekrieged."