Due to street closures for the visit of President Barack Obama, Muni lines will be crazy jank today and tomorrow.

SF MTA reports that the F Line and 5, 6, 9, 9L, 21, 27, 31, 38, 38L, 71, 71L, L Owl and N Owl routes will be "subject to delays" while Obama dines on gold-flecked caviar and stem cell-laced foie gras at the Getty mansion.

Mission Street bus routes (14 and 14L routes) will run on Market, so make certain you board the correct bus lest you wind up in the Mission or Excelsior. Shudder.

The 30 and 45 routes "will only serve north of Post Street. A 30/45 shuttle bus will be provided to serve Market Street and SoMa. Transfer between the two parts of each route at Sutter and Stockton."

And Fourth Street from Market to Mission and Mission from Third to Fourth will be closed beginning at 11 a.m. today until noon Wednesday.

Visit SFMTA.com for more details.