Johansson opened her monologue by addressing her engagement to Colin Jost right off the bat.
"What are they going to do? Fire my fiance?" Johansson said. "Oh no, what are we going to do without his paycheck?"
From there, the monologue ventured into Avengers-themed territory, where several cast members were turned into dust by Thanos' snap. Thanos wasn't actually there, but it turned out to be Pete Davidson wearing Thanos’ glove because he bought it online.
The 35-year-old actress returned to Studio 8H this week to take on the SNL hosting duties once again. Saturday's episode marked the sixth time Johansson hosted the comedy sketch show, having landed the gig in 2006, 2007, 2010, 2015, and 2017. She's also made numerous cameos over the years, including a surprise Dec. 2017 appearance in which she portrayed first daughter Ivanka Trump.
Johansson has starred in 2019's Jojo Rabbit as well as Netflix's Marriage Story, for which she received a Golden Globe nomination for Best Actress in a Drama.
You can watch Johansson's SNL monologue above. This week's musical guest is Niall Horan, who last took the SNL stage as a member of UK boy band One Direction.