03/28/2012 08:57 am ET Updated May 28, 2012

Justin Bieber And Ashton Kutcher Talk Space Sex And 'Punk'd' On 'Jimmy Kimmel Live' (VIDEO)

Justin Bieber and Ashton Kutcher both stopped by "Jimmy Kimmel Live" (Weeknights, 12 a.m. ET on ABC) Tuesday night to talk about their new joint venture: the Season 9 Premiere of "Punk'd."

In the episode, Justin pranked the perfectly nice Taylor Swift. So why did he choose her as his "Punk'd" victim? "I wanted to make her cry," joked Bieber.

It didn't take long before the chat took a decidedly racy turn. Kutcher was pondering the idea of having sex in space and then decided to demonstrate how he thinks it might be possible to do it in a zero gravity environment.

The Season 9 Premiere of "Punk'd" airs Thursday March 29 at 10 p.m. ET on MTV. "Jimmy Kimmel Live" airs weeknights at 12 a.m. ET on ABC.

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