Don't ever call it 'Frisco!
Just in case I don't have time to put together a more complete travel route, I'd just throw in the following:

N. of S.F.:

Point Reyes National Seashore
Muir Woods         Truly Awesome trees and trails to walk       through the woods
Oakland - Jack London Square: You can actually rent kayaks and go paddling right there.

S.F.:
Eat at Tommy's Joynt on Van Ness and Geary. Monster turkey wings.
Do anything on Fisherman's Wharf, lots of cheap tourist joints, but all wonderful. Fisherman's Wharf has a lot of Italian background, so the espresso there is pure Italia great. In the summer evenings there should be good street performers.
Golden Gate Park - The Japanese Tea Garden - almond cookies. The De Young Museum.

Sample the greatest ice cream cookie ever made: "It's Its" Available at small walk in shops maybe bodegas.

S of S.F.:
Route 1 along the coast. Beware there may be limitations due to a landslide. Check it out first.
But you can visit the Hearst Castle in San Simeon.
Or, go down Skyline Boulevard to Half Moon Bay on the Coast. Scenic Scenic.

While in San Francisco, walk the streets, ride the cable cars, imbibe the West Coast Craziness.

But don't call it 'Frisco!!!!