Dry humor at the ccHub bathroom door:
In-case:
1. you can't check out the site: ccHub is a technology incubation hub in Lagos. It's like the prime nest for computer geeks in Lagos (arguably Nigeria);
2. you can't view the image; it says: "And oh, there's an app for keeping the toilet clean. It's called flushing".
3. you dunno, computer geeks make apps; cool apps.
:-)