"Hohoemi no Bakudan" (微笑みの爆弾 Hohoemi no Bakudan, The Smile Bomb) is a 1992 single recorded by Japanese singer-songwriter Matsuko Mawatari. This is her second single from her second album Nice Unbalance. It reached the 45 position on the Japanese charts in 1992 and again in 2005, reaching number 187 for one week. "Hohoemi no Bakudan" in 2004 was, however, charted together with the song "Unbalance na Kiss wo Shite" (アンバランスなｋｉｓｓをして Unbalanced to Kiss) by Hiro Takahashi. B-side of the single features a song from her first album Aitashi Gakunari Gatashi (逢いたし学なりがたし), "Homework ga Owaranai" (ホームワークが終らない Hōmuwāku ga Owaranai, The Homework's Never Done)".