He just indicated we'd seen it before - he didn't say anything nasty. I didn't either - just being my typical smart-aleck self. I think you're attributing a lot of motivation to Alex that he didn't have a clue he had.
In any case, if I failed to welcome Luke when he joined in Nov 00, welcome Luke! We, as you have probably noticed, have a fairly easy-going type of conversation, where our comments are taken as being meant in a good-natured way...most of the time...well, some of the time.