People tweeting stuff. We allow tweets from anyone.
RULES:
For real. Everytime I get in the shower I end up having to point the showerhead away and cower from the cold water and I could have just turned it on first?
Similar dumbassery: Taking a shit and seating there for 20 minutes inhaling feces stench when I could do a flush as soon first turds come out and stay on the toilet until I can't feel my legs without a farty atmosphere in the bathroom.
Although, if you're a ball haver, this is a great way to get poo water splash on your balls...
Its okay buddy. I thought ovaries were in the boobs till I was like 20.
Pee is stored in the balls
I don't think I've ever used a shower where there was no way to avoid an initial cold spray while standing in it, so it never occurred to me to turn it on first because it wasn't an issue.
I can't think of an incident like this off-hamd for myself, but I once dated a woman who didn't know that women have a urethra. She thought the urine just came out of her vagina. She was ~23.
I had a very cold shower once until I realized the way that one knob faucet worked was you had to turn it an insane amount to get to the hot water.
If you still have that, know that it can usually be adjusted by removing that one screw you see and go behind the knob and adjust the hot water stop.
Really changed the shower comfort over here, as it used to be real hard to find that sweet spot between lukewarm and scalding hot. 
I don’t like wasting water, so I just stand at the far end and try to start wetting my hair until it gets warm enough to fully step in.
I mean, having lived more than half my life with water catchment NOT county water, letting the water run is wasteful and can mean you go without during drought. That means turning the water off while scrubbing, too. I've learned to embrace the cold on purpose at the end, with the closing pores n all.
I'm a first gen immigrant but despite having native American English, sometimes once in a blue moon I'll encounter a semi-rare word I've yet to be exposed to.
So my closest analog is that I was confused for the longest time why people kept referring to statues of figures from shoulder level upwards as busts when they never had chests or breasts or boobs or blossoms or busts!
So for the longest time not only was I confused, I would be on the lookout for statuses that depicted from breast height upwards, but I never found one, lol.
What's the difference between pointing the shower head away and standing outside at first?
Geometry
Best tip I can give: Turn the sink hot water on and let it run until it's hot and the lines are filled to the bathroom. When you turn on the shower, turn it to full hot until hot water starts coming out, and then adjust it to your personal preference. No waiting for shower to warm up now. Just jump in.
Have you ever done something...this dumb?
Well, at least OOP realizes it was dumb. I’d tell them to relax and not let it ruin their evening. We’re all astonishingly stupid sometimes. It happens to the best of us.