Weird and more than a little concerning, but I guess I could see it as well intentioned just really bad form. So the older man then shrugged and went on to the next person, right?
No. Just no. Consent isn’t just a kink thing, it applies everywhere. (I love the tea example and this is very clearly a “no tea” situation.) You made your offer, it was turned down, now go away and take your potentially poisoned candy with you.