verbal diarrhea
Babbling, longwinded talk; inane and lengthy chatter. Primarily heard in US. I get so nervous when I go out on dates that I always start getting verbal diarrhea and sounding like a fool.
verbal assault
Very hostile speech directed at someone. Don't talk to Stan today—I just tried to ask him a simple question, and I got a verbal assault. A: "Why are you crying?" B: "The professor gave me a verbal assault in the middle of my presentation."