The standout sketch this week took aim at uproars over Hollywood casting decisions, spurred by social media mobs. The parody came in the form of a game show hosted by Thompson called “Can I Play That?” — “actors’ least favorite game.”

The game featured three contestants, played by this week’s host, Idris Elba, and by Beck Bennett and Cecily Strong, each of whom portrayed working actors asked to give their best guesses as to who was allowed to play certain roles.

Thompson started by asking contestants about a recent real-life example: Will Smith’s casting as Richard Williams, the father of Venus and Serena Williams. Some have criticized the choice, arguing that Smith is too light-skinned to play Richard Williams. Can he play that?

Bennett hit the buzzer first: “Yes, of course, he’ll do a great job,” he said.

He was wrong. Strong buzzed in with the right answer: “Absolutely not, he’s not black enough.”

Responding to Elba, who asked if this was real, Thompson said: “It sure is. Because this game is produced by Twitter. Twitter: One mistake, and we’ll kill you.”

The rest of the sketch followed along the same lines. Elba’s character was told he was not allowed to play a blind person.