(I) don't believe I've had the pleasure
I haven't met you yet or before. I don't believe I've had the pleasure—nice meeting you, George.
(I) don't believe I've had the pleasure.
Fig. an expression meaning I haven't met you yet. Tom: I'm Tom Thomas. I don't believe I've had the pleasure. Bill: Hello. I'm Bill Franklin. Tom: Nice to meet you, Bill. Bill: Likewise. Bob: Looks like rain. Fred: Sure does. Oh, I don't believe I've had the pleasure. Bob: I'm Bob, Bob Jones. Fred: My name is Fred Wilson. Glad to meet you.