Person 1: 'Bro, I swear I can't help but always check Snapchat even if i know there's no new stories.'
Person 2: 'Damn dude, you might have CSD.'
When two people have each other as #1 on their best friend's list, showing that they are into each other for all their 'followers' to see.
Person 1: 'Hey man, did you see Cameron is number 1 on Violet's Snapchat?'
Person 2: 'Yeah, and she is number one on his.'
Person 1: 'Yeah, everyone knows they like each other from their Snapchat relationship.'
2👍 3👎