Soft-Brushed Cable-Knit Socks for Women (Old Navy, $9.99)
Available in a few beautiful fall colors, this sock is perfect for the first really chilly night of the season. Wear these while you make yourself a hot cocoa with marshmallows and walk past your roommates’ rooms making audible “brrrr” sounds. In a moment’s notice, they will definitely see that it really is cold and turn on the heat themselves, allowing you to successfully avoid any awkward asking.