But, no, the internet is serious business, and thus requires the most serious form of English possible. The type meant for Government Documents and Scholarly literature.

Consider this: Those who decide what is grammatically proper in English are, de facto, the English professors at the top universities in Britain and the US. Ever since, like, the fucking fifties, the majority of those professors have agreed (people actually survey this stuff) that Standard Written English is only appropriate in appropriate contexts. What are proper contexts for SWE? Narraration (optional), professional usage, scholarly works, and a few other things. In fact, these experts are proud to admit that English has an unusually rich body of dialectual literature and lyric, ranging from Shakespeare to Hardy to the most exported body of music in the world. Dialectual and informal English in the right context is encouraged by the very people who define the rules you’re bickering about.

Now, I don’t know too much bout talkin and all. English isn’t my first language, so let me put the question to you native speakers: Is a fucking image macro a formal enough setting to necessitate proper fucking grammar?

Ultimately I’m going to be right, if only because I can edit comments

I have always struggled to remember how it worked, so I try each portion individually in the sentence to see which way works. If we follow your thinking, the sentences would break down like this:

The best ones are rich. (Good)
The best ones are warm. (Good)
The best ones are can keep you up all night long.(Oooh, fail)

If you add in the extra “and,” your resulting sentences are:

The best ones are rich and warm. (Good)
The best ones can keep you up all night long. (Winnar!)

It helps my programmer brain to think of conjunctions as nesting statements.

Besides, even as the line currently is, it’s missing a comma; it should be “The best ones are rich, warm, & can keep…”

Don’t make me get out my Longman’s to cite this crap. APA ftw.