When someone so attractive comes into sight that you can't finish your sentence properly, and gibberish comes out instead.
My date was trying to explain why she doesn't eat meat when Dave Matthews walked into the restaurant. Made her yobble like one of the adults on Peanuts.
To constantly text people asking for their input, often when you already know what you're gonna do. Often used when picking up women, deciding what club to go to next, or other common senseactivities.
Alex (via text) to Rick: "You, there's a hot model all up in my business. Should I buy her a drink?"
Rick to Jackson: "F'ing Alex is always Yabbling me every time he's at the strip club."
Jackson to Rick: "Tell Alex if he Yabbles you one more time you're gonna call his wife."