A tick with Rick Astley's face on it. Its pretty self explanatory
Friend: *shows picture of Tick Astley*
You: Oh what the fuck is that?!
Friend: Tick Astley, you just got Tick Rolled
A cursed snapchat is when you use a try it with a friend snap and the other one joins on an object behind you
Girl 1: Oh my god! Look at this! I did a Snapchat filter and it put it on an object behind me!
Girl 2: OH SHIET. THAT'S A CURSED SNAPCHAT!! You have ghosts!!