Verbal Machinegun: The act of a person talking so much and so fast, its like being hit with words spat forth from a machinegun.
Bob: "So there I was, I was like, oh my god, that chick is so hot I just wanted to do here you know? I can't believe how hot she is, do you think she'll do me? I mean if I buy her enough drinks she might but who really knows if she will or not because women are-"
Bill: "Dude, you're a verbal machinegun! Slow down!"