I saw this on APhi's board and I loved the idea. I couldn't find one for DDD, but if there is one I'm sorry for the duplication!
You know you're a Tri Delta when:
-You have pets/stuffed animals named pearl, pine, etc.
-Most of your notes or doodles are covered in triangles
-You find yourself singing rush chants randomly
-You still can't draw a dolphin well
-You have MASTERED making delta's with your fingers and your friends
Add yours on!