I have an uncontrollable urge to go home and go back to bed. At the weekend, with colder nights now upon us (although it has been mild since then), I swapped EvilDuvet II for EvilDuvet (which is slightly heavier). It has to be said that EvilDuvet is much more evil than EvilDuvet II, and can exert stay-in-bed power over me even seven hours after I got up.
separating the wanted from the unwanted