TANSTAAFL

== English == === Alternative forms === tanstaafl TINSTAAFL (“there is no such thing as a free lunch”) === Etymology === Acronym, originating in the early 20th century, and popularized by Robert Heinlein's novel The Moon Is a Harsh Mistress. === Phrase === TANSTAAFL Acronym of there ain't no such thing as a free lunch: something advertised as being "free" will invariably have hidden costs. === Further reading === there ain't no such thing as a free lunch on Wikipedia.Wikipedia