Nice work if you can get it British informal
Many young people think that they just dress up as a celebrity and post their pictures on the social networking sites, and that's nice work if you can get it!
I have a friend who earns thousand dollars a month just by posting videos on Youtube. Nice work if you can get it!
This phrase is used in a humorous way.

(Image source: douglasjones.com/nice-work)
This idiom "Nice Work If You Can Get It" was used as a title for a popular song and jazz standard composed by George Gershwin with lyrics by Ira Gershwin. Its title phrase came from an English magazine. It was one of nine songs George Gershwin wrote for the movie A Damsel in Distress in which it was performed by Fred Astaire with backing vocals by The Stafford Sisters. The song was published in 1937.
1. Soneone tends to speak in unkind and cruel way that is likely to upset or hurt someone else.
2. The fossil tooth of a shark
1. Many people doesn't want to make friends with Sue because she has a serpent's tongue.
2. A: 'My thesis will center on a serpent's tongue.' B: 'A serpent's tongue? What does it mean?' A: 'A serpent's tongue means the fossil tooth of a shark.'