Quote from Joey in The One with Rachel's Big Kiss
Rachel: So, Joey, I just hooked Ross and Chandler up with some tuxedos for the wedding. Do you need one? Joey: No, I'm performing the ceremony, I'm not wearing a tux. Rachel: Well, what are you gonna wear? Joey: Multi-colored robes. Oh, and maybe a hat. Rachel: Does Monica know about this? Joey: I don't think so. Rachel: Can I please be there when you tell her?