snapchartist 

Someone who is so good at Snapchat they've essentially turned it into an art form.

"Do you follow Dixie Pond on Snapchat?"
"Dude, of course. She was the first Snapchartist. So hilarious."

snapchartist by playanomo December 12, 2016

Snapchattict 

One who is obsessed or spends too much of their time on Snapchat.

"John has put up 5 pics in his story in the last 10 mins!"
"Oh my god, what a Snapchattict!"

Snapchattict by Bharlie Crown February 12, 2014

snapchatitus 

Snapchatitus, the need to post every little detail about your life on Snapchat

You know that girl across the street? She has snapchatitus

snapchatitus by boii gg January 2, 2018