This video is super awkward ... Anthony Weiner was put on BLAST Friday by an ex-school teacher for his raunchy, sexting ways ... and it all happened while cameras rolled. Weiner was visiting homes damaged by Superstorm Sandy, when he walked into a s**t storm himself ... in the form of Peg Brunda a retired teacher, who went off on him. You gotta watch the heated exchange -- but to give you an idea just how PISSED Brunda is that Weiner refuses to drop out of the NYC mayoral race, she says, "Had I conducted myself in the manner in...