Perennial pop-punk band MxPx brought its 20th anniversary tour to The Trocadero this past Saturday night, and joining them onstage was Philly’s own Joe Gennaro, aka Joe Jack Talcum of The Dead Milkmen. Check out this fan video of the speechless band rocking out an enthusiastic rendition of the Milkmen classic “Punk Rock Girl” with Joe on vocals, sounding fun as ever.