There's nothing particularly fail-y about this post as it occurred on Facebook. A girl says she walked into a wall, but her breasts acted as a cushion.
Then, of course, Failbook has to turn it into a joke about ejaculating onto a woman's face. BECAUSE THAT'S WHAT WOMEN'S FACES ARE FOR, AMIRITE??! That, and saying things about how wonderful their man is. Dude.