Chris Pratt teases 'Mom' guest spot with Anna Faris

Jan. 17 (UPI) -- Chris Pratt is giving fans a glimpse of his Mom guest spot with Anna Faris.

The 37-year-old actor shared a photo of himself and Faris from her CBS sitcom ahead of his appearance on Thursday's episode.

"Watch me and @annafaris do some of the following things this Thursday on #Mom on CBS: 1) ride horses 2) act 3) kill nazis 4) do jokes 5) do funny faces," he wrote Monday on Instagram.

Faris has starred as single mother Christy Plunkett on Mom since the series premiere in 2013. Pratt will play Nick, a "charming" horseback riding instructor and nephew to Marjorie (Mimi Kennedy), according to a previous report from Entertainment Weekly.

"This is the most fun I think I've ever had on a set," the actor told Entertainment Tonight. "It's really nice to see your spouse in their work environment."

"Being her guest on Fridays when they would tape, part of me was always a little jealous that I couldn't be out there on that stage with them," he added. "We have a sex scene, like a sexy scene. We've been rehearsing that for 10 years."

Pratt and Faris married in 2009 and welcomed their first child, son Jack, in 2012. The couple previously co-starred in the 2011 movies What's Your Number? and Take Me Home Tonight and the 2013 film Movie 43.