The Master stiffens a bit at John's disbelieving little display of snark. Oh, John. If you weren't at all interesting.

"Y2K?" He doesn't have to force himself to laugh. If anything, that question is an indication of complete ignorance on the other man's part, and that likely means he never experienced how absolutely inconsequential the whole thing was.

No point in telling him that either. Not yet.

"Oh, you have missed out, haven't you?"