geriatric texting Share definition Flag When someone text you way too early in the morning. Like as early as old people wake up. He text me at 5 am this morning. That's some serious geriatric texting. I hate it when he does that. geriatric texting by J Farrar April 25, 2015 0 0 Get merch Get the geriatric texting mug. Buy Now — $32.95 See more merch