genuinely laughing 

The act of forcefully laughing at someone's humourless joke to avoid an awkward or apathetic situation. This type of laughter is very commonly witnessed in a workplace environment.

The Boss: "When you take a long time, you're slow.
When your boss takes a long time, he's thorough."

Employees: (genuinely laughing)

genuinely laughing by shoulda_brought_them_shigars June 14, 2009