Racun means poison in Malay. If you learn it, then one day you might hear your coworkers saying to each other: Mari racun bos kita — Let’s poison our boss. If you hear that, don’t hurry to call the police. Relax. Take a deep breath.
In Malay slang, to poison someone means to persuade someone to do something. You coworkers simply want to get something from their boss. Maybe new fancy computer screens. So they are making up a story how new screens will increase productivity.
And if someone is trying to sell you his crazy idea, you might want to reply: Awak nak cuba racun saya? Are you trying to poison me? But don’t say it to your boss. This is very informal. Kind of slang.