Never keep a wish list after GOG begins to allow DRM.

never eat korean noodles that say it's 2x spicy chicken

If you do, never eat them without having any yoghurt and sugar ready

Never expect to find any of the following on Christmas Island: Santa Claus, natural snow, or actual elves.

Never, without warning, link to any of the following:
* Link to a site that plays audio. (This includes well-known sites like YouTube.)
* Link to a site that has flashing lights that could cause seizures in some people.
* Link to a site with a paywall, even if it's a porous one. (Someone accidentally clicking on the link could lose one of their free article views for something that isn't worth it.)
* Post publicly a link to a page that requires a login to view.
* Post publicly a link to a page that returns a 4xx error code, or to a page that redirects to another (just link to the target page in that case).

NEVER put ice cubes in sipping rums (unless they are made of pure coconut water)
NEVER buy rums with lots of added sugar and fake flavoring
NEVER mistake very sweet rums ("sugarbombs") for rums
NEVER mix sipping rums with anything at all whatsoever
NEVER enjoy your rum without clearing/restarting your taste, first and foremost
NEVER pay a bartender upfront, before he delivers the product and/or secret knowledge involved
NEVER be fooled/suckered in by the barwoman's "charms"/"merchandise"
NEVER entrust your concoction to somebody who doesn't know of all the things you ask and mixology brands you inquire about
NEVER open a bottle o' rum that will be off the market soon, or forever changed thereafter

Never post nine things to never do unless you name them the "NINE NEVERS" for added effect; this "never do" is especially important for an alcohol-related subject, as people might otherwise believe you to be an alcoholic

Never name a folder as "CON" in a Windows operating system.

Never pay too much for PC components.

I found out the hard way that I shouldn't take a bath and make toast at the same time.

That would realllly limit the amount of games one can buy. o.0
(As many companies, SHOCKER, are in it [in large part] for the money)

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An idea that negates the need for most of that:
(and my contribution to the thread)

Never click a link without checking what it is first

(Also btw in case you didn't know: there are extensions and such for browsers that prevent autoplay of YT-etc videos on websites)

That's not always feasible. In particular:
* It's quite possible to click on a link (or otherwise follow it) by accident.
* Not everyone is using a browser that supports extensions, or is using a platform that supports a browser with extensions. For example, I don't know if there's any way to use such extensions on an iOS device (without jailbreaking it).

Or "NUL", for that matter.

(What happens when you name that folder "CON", out of curiosity?)

This restriction also applies to MS-DOS and I believe MSX-DOS as well.

Hence the bit in my post that says "most of that"

(Also tbf those exceptions....including those you posted and some others in general....usually seem to boil down to people being "sloppy" [misclicking links or etc] or due to their own voluntary choices [what browser or HW they use].
In a nutshell, I follow this motto: People "make their bed" with their choices? Then they should be ready to "lay in it" [i.e. to accept the downsides of their choices])

---

New addition: Never start filling a flash drive or other portable drive before making sure it's formatted the way you want first.
(learned that the hard way with my first flash drives...had filled them a good deal before thinking to check how the drives were formatted)

Stand up in a hammock.

Never stand up in a canoe.

1. Never let a close friend of the girl you like and she is interested in you, a. to sit right next to you during lessons, b. talk to you casually all the time and c. transport you in her car.

NEVEEEEER

2. Also, never sit silent while the close friend of the girl you like and she is interested in you, badmouths her and makes unacceptable jokes about her before third party people who act her friend.

3. And never forget to voice record others, so as you can have proof where and when it matters and could have a chance to save the day and the story.

OR ELSE YOU 'LL PAY THE ULTIMATE PRICE