On Snapchat, SMO primarily means two things depending on context: "Shout Me Out," which is a request for other users to promote or mention a profile to increase visibility, and "Serious Mode On," which indicates someone wants to engage in a serious conversation or post something non-jokingly.
"Shout Me Out" is commonly used to encourage others to share or promote a Snapchat user’s account to their followers, helping increase publicity. Meanwhile, "Serious Mode On" signals a tone shift to a more earnest discussion or message.
