Have fun watching Yu Yu Hakusho the Movie: Poltergeist Report full movie with English and Hindi Subtitles online.
The Japanese version is "A Smile that's a Bomb." Oh, and by the way, those lyrics are for the TV version of "Smile Bomb," there's a whole second verse you don't have. The two are similar, but I believe (don't quote me on this) that the English "Smile Bomb" was created for the English anime. There is a Japanese version and a SEPARATE English version. You can easily get the friggin' ENGLISH lyrics anywhere, I want the Japanese!!! Also, if you copy the subtitles line for line, the lyrics you get for the English version are slightly different.