Made famous by the Bash.org Top 100 list, "I put on my robe and my wizard hat" refers to the fake cyber sex dialogues of BloodNinja.
bloodninja: Baby, I been havin a tough night so treat me nice aight?
bloodninja: Slip out of those pants baby, yeah.
BritneySpears14: I slip out of my pants, just for you, bloodninja.
bloodninja: Oh yeah, aight. Aight, I put on my robe and wizard hat.