Inappropriate Nappa is from Dragonall Z anime series. He is part of a race called saiyans. Also he is a crude neanderthal. So obviously his saying is "I'm just saiyan".
Nappa (ナッパ)- is an elite Saiyan warrior from Planet Vegeta, and Vegeta's partner in combat. Prior to the destruction of Planet Vegeta, Nappa was the General of the Saiyan Army under the planet trade organization and aid/partner to the young Prince Vegeta as well. After his race's demise, he along with Vegeta and Raditz work as soldiers directly under Frieza, which leads him to Earth. His name is a pun off of Chinese cabbage.
Nappa was known for being the dumbest saiyan left of the survivors. His careless remarks and blunders made him a fool against Goku (Kakarot). His rank of 'general' among the saiyans made his entire character ironic.
Nappa is just one example of the idiots who make freedom of speech seem like a crime sometimes.