KMS is an internet shorthand for "kill myself". It is generally used as a melodramatic expression of frustration or disgust or a more serious expression of suicidal thoughts. The acronym is commonly used on private platforms like Snapchat, WhatsApp, iMessage, and TikTok. It is often used in a sarcastic or humorous way among friends with a unique sense of humor. The phrase "kms" can also be found in the title of a music album on TikTok.