Dry Cleaning - While dry cleaning does not involve water, the process does involve the use of liquid solvents. Dry cleaning is any cleaning process for clothing and textiles using a chemical solvent other than water. The solvent used is typically tetrachloroethylene (perchloroethylene), which the industry calls "perc" or "PERC." It is used to clean delicate fabrics that cannot withstand the rough and tumble of a washing machine and clothes dryer; it can also eliminate labor-intensive hand washing.

Funny Bone - The "funny bone" is not a bone - the phrase refers to the ulnar nerve. Have you ever hit the inside of your elbow in just the right spot and felt a tingling or prickly kind of dull pain? That's your funny bone! It doesn't really hurt as much as it feels weird. The "funny bone" got its nickname because of that funny feeling you get after you hit it. But your funny bone isn't actually a bone at all. Running down the inside part of your elbow is a nerve called the ulnar nerve. The ulnar nerve lets your brain know about feelings in your fourth and fifth fingers. It's also one of the nerves that controls some movement of your hand.

Tail Bone - The coccyx, commonly referred to as the tailbone, is the final segment of the vertebral column in tailless primates. Comprising three to five separate or fused vertebrae (the coccygeal vertebrae) below the sacrum, it is attached to the sacrum by a fibrocartilaginous joint, the sacrococcygeal symphysis, which permits limited movement between the sacrum and the coccyx. The term coccyx comes originally from the Greek and means "cuckoo," referring to the curved shape of a cuckoo's beak when viewed from the side.