Truck h Up

And inadvertent nonsense message sent when your messaging partner makes you all nervous and sweaty, impairing your ability to properly operate a smartphone or other touchscreen device.

Often blamed on a friend's meddling.

Texter 1: Truck h Up
Texter 2: You are horrid at sexting.
Texter 1: Sorry! That was my friend's fault. I let her type for me while I dictated but forgot she doesn't understand written English.