Texting single words with long pauses in between each word, effectively mimicking the tardiloquent speaking style of an ent from The Lord of the Rings.
Treebeard texting:
Me: "Want to come over at three?"
Treebeard: "..."
Treebeard: "I..."
Treebeard: "AM..."
Treebeard: "NO..."
Treebeard: "T R E E"
Me: "K nvm"