What does the cryptic crossword clue "Fling with hunk is wild fantasy (7,8)" mean?

The wordplay uses an anagram. anagram of FLINGWITHHUNKIS ("Fling with hunk is") [anagram: "wild"] = WISHFULTHINKING The answer is WISHFULTHINKING.

Fling with hunk is wild fantasy (7,8)

Guardian Cryptic #26527 | 1 Across | 2015-03-24 flower