The F Yeah Tour began as a music, comedy, and arts fest held in L.A. every summer, and this year it’s going on tour, on a bus run by vegetable oil. Seven bands, mostly sharing a cut-and-paste DIY sensibility, played at the Black Cat last night: DCist fave Dan Deacon, Matt and Kim, The Death Set, Team Robespierre, Monotonix, Mannequin Men, and comedian Josh Fadem. The event also featured a table with voter registration, information…