I think that the song is about the title of the song. He's showing his appreciation for the ones that he loves while he has a chance and telling them just to appreciate life.
~~ About the bomb part, I take it as obviously like it says, he's the fuse and what he's about to say will make him finally explode, "This bomb is the answer to all my pain" this song is helping him deal with the pain he's had about his mom.
I think that the song is about the title of the song. He's showing his appreciation for the ones that he loves while he has a chance and telling them just to appreciate life. ~~ About the bomb part, I take it as obviously like it says, he's the fuse and what he's about to say will make him finally explode, "This bomb is the answer to all my pain" this song is helping him deal with the pain he's had about his mom.