It happens in the middle of the night when you wake up with a massive dookie pain, rush to the bathroom and don't notice the toilet seat is up. A bare butt hitting cold water at 2am usually causes the person to yelp loud enough to wake everybody in the house.
Kelly: "What happened in there?"
Julie: "You left the freakin' toilet seat up again! I had a splashdown!"
Kelly: "I bet you're awake now."
A heavy song with massive groove or driving rhythm that makes a metalhead move their head in time with the music. Then when no one is around, they crank the stereo up to 11 and headbang themselves sick. If one of these songs occurs at a live concert, anyone close to the metalhead will be hit by whipping hair.
Of Wolf and Man by Metallica is SO headbangable! I listened to it three times today and now I have a migraine. Good times!