ACRONYM FOR: There's No Such Thing As A Free Lunch.
TINSTAAFL means get a job, you mooch!
by Muse4U August 01, 2006
there is no such thing as a free lunch; for everything everywhere, someone somewhere had to work for it
When Bob tried to get away with cheating on his math test, his teacher said, "Tinstaafl," and gave him a score of zero.
by Jim Downard October 04, 2003