286
Used in some AD&D circles. It comes from a book of wild surge
results 286 being instant death to the caster right now!! No saves no resurrections no anything just immediate and final death.Usually reserved for idiots who think that dieing is something that only happens to "other peoples" characters.
D.M  so now that I have totaled up the damage from the   burning  mage tower that fell on you while you were trying to loot through the spell books that were on fire after  I
told you that it was going to fall!! You take... 2800 
points of damage.

player1 oh... can I roll for half damage?

D.M  dude, your 286!! Now pack up your shit and get the fuck 
     out!     