School Desk of Inner Tension

Was at school and during a presentation, got a tad bored so doodled. Yeah, what an excellent student. So I started sketching in my homework pad and then starting drawing everything I saw as an allusion as I sketched. Yup I know it is a sucky sketch. blah blah blah. Gotta give me credit though, was half-listening to the presentation and did this in 5 minutes. <-love this emoticon!
Close-up version- [link]