Human Extinction Attack
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Super Boo raises his hand up in the air and charges a pink aura around his body. He then fires a massive barrage of pink energy waves up into the air that rain down onto his opponent, inflicting a huge amount of damage.
Dragon Ball Z
Super Boo used this attack to kill every single Earthling on Planet Earth. Only Chaozu and Tenshinhan were fast enough to dodge the blasts and escaped from death. Bee and Hercule were spared due to the friendly Mister Boo's influence.
It later appeared in Dragon Ball: Raging Blast.