"Kuviasungnerk" means . . . "free coffee and donuts on the Main Quadrangle"? It means that and much more as the winter festival continues through Saturday. Activities today, Jan. 20, will include a Polar Bear Run at 4 p.m. on the Main Quadrangle. Friday, Jan. 21, will bring Club Kuvia, featuring DJs, dancing, live music and karaoke beginning at 8 p.m. in Ida Noyes Hall. On Saturday, Jan. 22, blues artists Otis Rush and Lonnie Brooks will headline the MAB-sponsored Kuvia Bash concert at 7 p.m. in Mandel Hall. For concert ticket information, see the Calendar.