Child induced insomnia
After a horrendous night in which Calvin and Sabina tag-teamed us with sleep-deprivation torture techniques (which means our house is a gulag run by Nazi vampires) I stumbled out of bed to respond to the twins' exhortation to bring milk.
Being incredibly tired made me forget to put a shirt on, and apparently that's outside of Calvin's paradigm. "Put shirt on!" he says, the moment he sees me.
Sorry dude, if you keep me up all night be thankful I can stumble into the kitchen to make food for you. Dress codes are right out the window after only 3 hours sleep.