what does kms mean on snapchat?

best answer
“KMS” is an abbreviation for “kill myself.” For example a user on Snapchat can text you ‘KMS’ to mean they are irritated or disagree with your content. It is an overreaction to unfavorable situations. The primary intention of the abbreviation is to exaggerate feelings. It is like a small child throwing a tantrum because they want more attention.