This little loop is kinda like a multi, but the final coordinates are given, and you don't have to do it the way I am suggesting. I'm sure there are other ways to do this catch, but they sure as spit won't be the Quirky Loop.
For starters: There is a SIGN at N34 25.359 W119 45.021. If the SIGN is 12:00 on an analog clock, and you are standing at 6:00, in the distance at about 10:30 between the trees you can see the trail. That is what you are getting yourself into.
You can park in this area, and start walking northwest from N34 25.382 W119 45.021.
After walking for 10 minutes or so you will reach a street. Take a left, walk a hundred yards or so to the next T intersection and take a right. Wave at gramma and grampa and keep walking until you see VITA COURSE exercise equipment #4 and #5.
There is a trail that passes through the VITA COURSE, follow it and then take a left to search for the beginning of the trail that you saw from the SIGN.
Pass the CHAIRS and continue to the cache location. Once you get the cache, you can continue east on the trail until it drops down to a road. This road is the same road the SIGN is on. Viola! A neat little loop.
To get extra quirky credit for this cache, upload pictures of SIGN, VITA COURSE, and CHAIRS with your log entry. If not, no shame; you just aren't a quirky loop.