Quote from Phoebe in The One with the Chicken Pox
Ross: I just spoke to Carol. Ben's got chickenpox. Rachel: Oh, no. Ross: Yeah, so if you haven't had it, chances are you'll get it. Rachel: I've had it. Joey: I've had it. Monica: Had it. Chandler: Had it. Phoebe: I've never had it. I feel so left out. Oh, look!