Two and a half hours to my birthday!!!

An old man elderly gentleman came into the pharmacy today. I took his prescription and handed it to the pharmacist to prepare. I then turned around, and stood silently, gazing at the floor. Then I felt foolish and attempted some sort of small talk. The weather's always a good starting point..

"It's looking good out there today..." I said merrily.

"Oh...okay..." He replies, *sighing* as he slowly shuffles with cane to a chair, sits down and looks solemn and gloomy. It took him about an hour to reach chair by the way.

Anyway, what did he think I said?! Because old people usually love me!!