Boondocking: to camp with your vehicle in remote areas such as deep woods or desert locations, without power, sewer, or water hookups.
Wallydocking: to do this in Walmart parking lots :)
I can't believe I'm saying this, but I love Walmart. I didn't used to, since they all look basically the same and are all filled with identical cheap stuff from China. But let's face it. They have everything you need at an affordable price, and (best of all), they allow you to park overnight. At least most of them do. You can literally live at Walmart and make it your home if you want to.
Tonight I am parked in another Walmart lot, and I must say, I've gotten pretty used to it. It is nice to be able to use their bathroom in the morning (and at night), to know I am permitted to park here, to run inside and buy something if I need it, to not need my LED lights since their parking lot lights are so bright, to be camped out next to other vans & RVs doing the same thing as me, and to just feel safe. Almost every single Walmart that I've parked at has had a friendly security guard patrolling the lot & especially looking out for us overnighters :-) It just makes me feel good to know that I am parked in a secure place and even being looked out for.
I definitely park at other places, too, like the occasional truck stop, 24-hr grocery store, friend's driveway, rest area, park, or forest. When I'm near an unknown city, though, and actually looking for a place to spend the night, I always check out http://www.parkfreeovernight.com/ first to see if there is a Walmart nearby. If there is, I go there. Walmart makes things easy, it is just a safe and easy overnight solution. If there isn't a Walmart nearby, my 2nd step is to check http://www.freecampgrounds.com/. If nothing there looks good, I check my "2008 The RVer's Friend: North American Diesel/Parking Directory" for nearby truckstops that allow vehicle overnight parking. If no truckstops are nearby, I check http://www.casinocamper.com/ for nearby Casino lots, I look in my road atlas for nearby rest areas, or I just drive around and find something that looks good. I must say, however, there is usually a Walmart nearby, which is why I could possibly be considered a regular Wallydocker.