Spliting Headache is a attack developed by Super Saiyan 3 Gotenks during his fight with Super Buu. After being thrown into a lake by Super Buu, Gotenks rises into the air and raises his left hand while yelling "Splitting Headache". He forms a huge ball of energy which soon turns into a beam as it flies off into the air. The newly formed beam then came crashing down upon Super Buu, splitting him in half (hence the name Splitting Headache). Gotenks then followed up the attack by firing two energy waves in an attempt to destroy the remains of Buu, but the Majin simply regenerated and continued the fight.