party trick

plural party tricks

1. A trick that could be performed at a party for entertainment.

   Synonyms: parlour trick

2. broadlyA clever or tricky behavior.

   C++ has a great party trick here: The preceeding ^([sic]) line might be in a different file!

   2007, Pete Goodliffe, Code Craft: The Practice of Writing Excellent Code, page 163

   1 more example

   He summarised the situation to me in RAIL 612: "The railway is expanding. Sooner or later, after every engineering party trick, we run out of capacity."

   2020 May 6, Philip Haigh, “Just one more stop on the long journey to HS2 fulfillment [sic]”, in Rail, page 64

   Synonyms: parlour trick