‘Is that a thing?’ for ‘does that exist?’
Deliberate omission of grammar to show e.g. defeatedness, bewilderment, fury. As seen in Tumblr’s ‘what is this I don’t even’.
‘Because [noun]’. As in ‘we couldn’t have our picnic in the meadow because wasps.’
Use of kerning to indicate strong bewilderment, i.e. double-spaced letters usually denoting ‘what is happening?’ This one is really interesting because it doesn’t really translate well to speech. It’s something people have come up with that uses the medium of text over the internet as a new way of communicating instead of just a transcript of speech or a quicker way to send postal letters.
Just the general playing around with sentence structure and still being able to be understood. One of my favourites of these is the ‘subject: *verbs* / object: *is verb*’ couplet, as in:
Beekeeper: *keeps bees*
Bees: *is keep*
Me: *holds puppy*
Puppy: *is hold*
I just love how this all develops organically with no deciding body, and how we all understand and adapt to it.