Communication Breakdown

The last two days have been very cold here in Fukuoka prefecture, and the mutterings of "samui desu ne!" have been even more frequent than usual. With my two sweaters in the wash, I wore just my shirt today, with a thermal undershirt beneath. This didn't seem to compute with any of my colleagues, who have all stared at me and said "you're wearing a shirt... you must be cold", to which I reply that I have a thermal undershirt, but to no avail. They pause for a second and then repeat "But you're wearing a shirt.."

It seems that in Japan, you need to wear your warm clothes on the outside, or not at all...