Having had only three hours of sleep last night, the only way to stay awake for the rest of the day is a huge cup of coffee.
But caffeine alone isn’t enough to keep people awake. It is therefore essential to resort to amusement and humour to keep me up!
Hence the drawing, and walking around school holding this cup all the day. (Don’t worry. I’ve refilled it with water. I’ve not been drinking coffee all day long, as much as I’d love to do so.)