A person who speaks unintelligibly, moves in zigzagging motions, frequently cannot hear what people are saying (prompting the question, "What?"), and/or has a propensity for stabbing people's sides.
Muhammad Dhanani is such a flib flob; he doesn't know how to walk linearly and always runs into poles or other people.
Mash Flob, noun.: A slang term coined over the Valentine's Day and Mardi Gras weekend in 2010 by the PlayStation Home community for a "flash mob," via a play on spelling/pronounciation.
Avatar 1: "Hey! Have you heard that there's going to be a mash flob in the Mall around 2pm?"
Avatar 2: "Yeah! We're all going to dress up in green and wear Mardi Gras masks, dance around the Home logo in front of the waterfall and do the Hero pose."
Avatar 1: "This is going to be EPIC AWESOME! See you there!"