NY Times Crossword
Patrick Berry - Nov. 27, 2008

The following three phrases share an unusual property. Can you determine what it is?

LEGAL AGE
BEST BETS
STUCK ONE'S NECK OUT

Answer:

The second half of each phrase "recycles" the letters of the first half. That is, each letter in the first half of the clue is repeated in the second half.

NOTE:  See also TWIN WORDS - Dec. 1, 2009