Annoying Pre-Sleep Irrational Thoughts

So I've been meaning to write about this for a while but for some reason hadn't gotten around to it but I'm doing it now and that's what's important. I really need to know I'm not the only person who does this so please back me up! I recently had a discussion with a friend about it and she does it too so at least there's two of us which is something and I now have someone to discuss it with so I don't feel like a complete crazy person.

Do you ever find that after a long day at work (or doing whatever) and you get into bed ready to sleep, your brain decides its a totally appropriate time to have the most ridiculous, irrational thoughts in the world? For example, last night I'd done my pre-sleep ritual (make up removal, clarisonic, sudacreme on blotches) and I get under the covers and try to switch off when my brain pipes up 'Hey, you know what would be interesting? To shave your eyebrows off just to see what you look like. It's a really good idea. You should probably do it tomorrow before work.'

WHERE HAS THAT THOUGHT COME FROM? I do not want to shave my eyebrows off. I then start  obsessing over my eyebrows and what I would actually look like if I shaved them off (which will never happen by the way) and how on earth would I find an eyebrow pencil to match my hair colour. This continues for at least half an hour.

Another example. I should probably mention at this point I have a deathly phobia of snakes / getting bitten by a snake. (After watching Kill Bill Volume 2, who wouldn't?) I Performed the pre-sleep ritual once more and began to snuggle down, when there it goes again. 'Hey, it's your brain here. Just wondering what you'd do if there was a snake in your room RIGHT NOW? You probably wouldn't be able to sleep would you? What if it was a black mamba like on Kill Bill Volume 2 and you couldn't catch it, but you could hear it? Anyway, just a thought. Enjoy.'

At which point I have to check all rooms of the house and open all of my drawers, cupboards and wardrobes to check they are in fact, snake-free. 

My brain is supposed to be my ally. Why does it do this to me? Or if it insists on testing me in such a way, why not during the day whilst I'm at work? Not when it's bedtime. No, brain. Naughty.

Anyway I sincerely hope I'm not the only one out there, or I may look like a nutter.