This is the 18th time Ive done it this semester, I've pulled yet another all-nighter.
"But Atrax-27, what would you be doing at this hour?"
"Studying Differential Equations and Laplace stuff"
"Really?"
"Nope. I've been surfing the internet all night"

This is true, an entire night wasted, I could have been sleeping, or building cars, or both, but instead I just squandered my time.