what does s/u mean on snapchat?

best answer
What is S/U on Snapchat? S/U is an acronym that stands for ‘Swipe Up’. It is quite a common acronym and is used quite extensively on other social media apps too. The term was introduced on Instagram as a call-to-action to encourage users to swipe up on Stories. The swipe up action launched a link that the account holder could customize.