Normally reserved for the creative and perpetually bored, the art of doodling in textbooks has been around for as long as students have been forced to read dry, painfully dull tomes on their least favorite subjects.

Thanks to hilarious doodles like these, however, one student's boredom can be another's entertainment. Collected from student textbooks in Vietnam, these sometimes silly, sometimes scandalous works of art bring a little life to the less-exciting side of education. The result? Impressive and too cool for school.

[Photos via Facebook user Vietdesigner.net]