1. A very, very bizarrly upbeat song by a band composed of a group of shameless Japanese men wearing nothing but disturbing fig leaf briefs.
2. A fanimutation based on the above song.
3. A Kojiro Abe music video based on the above song.
4. Japanese for "we did it!".
Verb. In Japanese, it means "I did it" or "I did something". A Japanese song called, "Yatta" was written, and it repeats the word "yatta". It can be a proclamation of success. "Yatta" can also be like "Eureka!" or another term of that nature.