On Snapchat, "SMO" has two common meanings depending on the context:
- Serious Mode On — Used to indicate that someone is being serious or focused about something, often signaling a non-jokey tone or important topic.
- Shout Me Out — Refers to requesting a "shoutout" where someone shares another person's Snapchat profile to promote them and increase their visibility or followers.
So, if you see "SMO" on Snapchat, it generally means either someone is taking something seriously or asking for a shoutout to boost their profile.
(Note: In some other contexts outside Snapchat, "smo" can have very different slang meanings, but these are not typical in Snapchat use.)
