Bota Magetta, also called Invincible Botamagetta (無敵のボタマゲッタ, Muteki no Botamagetta) is a technique and a fighting style used by Auta Magetta and Botamo. This was first used against Vegeta in the Universe Survival Saga.
This technique is described as Botamo's invincible body and Auta Magetta's steel psyche.
Because of Magetta's weakness of losing his will to fight at the minor insult, and Botamo being not very strong in comparison to the likes of a Super Saiyan, they came up with a strategy to counteract their weaknesses. Botamo sits on Magetta's shoulders and covers the latters ears, so he can not hear any insult towards him. Even if the opponent tries to move Botamo it's quite difficult because of his invulnerable body. Champa says that Magetta has strengthened his spirit but it is nothing like that, as pointed by Vegeta. This combination is able to force Super Saiyan Vegeta on the defensive.