Originally, a slang phrase for padding in the bodice of a dress or undergarment to make the breasts look bigger.

In Robert A. Heinlein's The Number of the Beast and later books in the series, the name of Zeb Carter's car and the computer in it, who is not originally self-aware but becomes so as the result of a visit to Glinda the Good Witch. (She also acquires two full-size bathrooms that couldn't possibly fit inside the car without magic.)