I was drinking coffee the other day and there was this old Italian man sitting on the bench near me and kept talking to me in Italian even though I don't speak it. He was babbling on for like 20 minutes with his hands and all and I was just nodding and smiling. He was probably in his 70's. Anyway, he had a pocket square in his shirt pocket. He pointed to it and then pointed to mine and started laughing. So maybe it isn't a trend, but an old-timey thing.