The Laughing Salesman (Warau seerusuman) is a horror manga created by duo Fujiko Fujio, and later, Fujiko Fujio A. The manga began as a one-shot series serialized in Shogakukan's Big Comic magazine on 1968, later becoming a full pledged series published by Jitsugyo no Nihon Sha's Comic Sunday magazine from 1969 to 1971. The manga tells the story of a salesman named Moguro Fukuzo, whose job is to help people fill gaps in their soul. However, in reality, he ruins people's lives if his clients backstabbed him or never asked him for help.
藤子不二雄先生筆下的作品，該作品以诙諧幽默的手法表現出現代人內心最脆弱的一面，是一部發人深省，卻又令人捧腹大笑的新一代黑色喜劇。每個人身上都會有不甚完美的缺點，爲了隱藏這些缺點，常常會造成心理壓力，而藤子不二雄A筆下的這位黑色推銷員——喪黑福造的主要工作就是抒解這些人的壓力。對于有求于他的「顧客」而言，大叔是一位令人搞不清是敵是友的怪叔叔，也是一位令人又愛又恨的魔術師。他能察覺你內心最脆弱的部分，也能看穿腦海中偶爾浮現的邪惡想法，在你覺得難堪無助的時候，是他伸出手來扶住你搖搖欲墜的身體和心靈。
