IMHO: The funniest, simplest, and grossest app out there and I am mad I didn't think of it first

Poop map.  The name of the app tells you what it is about.  It is an app using the GPS in your phone and tablet that allows you to mark on a map where you have pooped and it keeps track of the different places as well.  As explained by it's developer:

Poop Map is a small app that helps you log all the places you've pooped.By pressing the only real button available, "Drop the poop", you'll mark you location and be able to conquest your home, office, friends' houses. Expand everywhere!
It also enables you to share your poop locations privately with your friends using the app or via official website.

Available for free only on Android, and I would be shocked if it ever made it past the walls of Apple, this throw back to early days of the Four-Square app will let you fight for public and private dominance of bathrooms between you and your friends all over your town or city.  

While this app is very much in its early stages, the one feature I would have like to have seen is a kind of note taker with each place you "go".  Maybe rate the bathroom in the notes or have a ranking system so that if you do share places amongst your friends, you or they will know which of the closest ones can be safely ventured into or avoided entirely.  As a Dad of a still potty training little girl, a note of whether a place has a changing table in the Men's or not is a huge deal.

On that note it's free go ahead and check it out.  Let the toilet territory fight begin!