The Muffs, "Really Really Happy", off their 2004 album by the same name, their last studio album. Just some 90's style pop-punk, with Kim Shattuck sounding half-drunk as usual.
Oh yeah, connections. Kim Shattuck was part of a band called The Beards during the 'oughts with Lisa Marr, who was lead singer of the band Cub, for whom Neko Case was a part-time drummer when Cub's normal drummer wasn't available. Heh.
-- Badtux the Music Penguin