What does SU mean on Snapchat?
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Snapchat: Charms, emojis, trophies and everything you need to know
16. What does SU mean on Snapchat?
SU on Snapchat means "Swipe Up". It usually leads to a link or it's used to direct people to chat with them. [Rafael Henrique/SOPA Images/LightRocket via Getty Images]