I found these here, under awkward family photos, and I couldn't stop laughing.  These are safe for everyday consumption, but be warned!  What you see over there cannot be unseen!

The way his siblings are recoiling away from him leads me to think little Billy has developed a reputation for this kind of stuff.

                                       Junior has clearly inherited dad's insane sense of humor.

                                         The best part of this is the look on mom's face.

                                                                  Everyone scream!