I was thinking really hard. Yes, sometimes my eyes close and my head lolls back when I think really extra-hard. Well yes, there can also be a smidge of drool. No really, it's actually a chiropractic-recommended ergonomic posture for aligning the neck muscles to alleviate a myriad of lower back problems that can arise from desk work such as sciatica and... hey, where are you going? I'm not bullshitting you this time, these are documented facts! Hey, it's called science, look it up!
