Listened to another MIT mixer. xxx is a very attractive guy, yyy is a madmuazel after a cocktail. The phase "comes back" is missed.

YYY: Wow, what are you doing?
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
YYYYYYYYYYYYYYYYY The Doctor? What about O-O?
XX: The Master of Arts. Metamaterials and medicine.
YYY: How interesting!! (I try to tap into the palms), but what are metamaterials?
xxx: (more strangely) it means from shit, sticks and isolants
xxx: (pause, even more sharply) only without isolants
yyy: (in confusion, involving taking it for the elbow) about 3D printing?
XXX: Yes with a breath. Often without a stick, too.

(He puts the undrunken beer on the bench and leaves, apparently hanging)