The "Blink Twice" star also talked about "annoyingly cool" fiancé Zoe Kravitz -- and her rock star dad Lenny -- on the "Tonight Show."
The singer also performed a new song she wrote just for host Jimmy Fallon on Wednesday night's (June 12) show.
The pair previously urged the pop star to date the tight end on their Calm Down podcast.
The producer also played his original demo of "I'm Just Ken" on The Tonight Show.
The "Selfish" singer also made a memorable entrance on Thursday night's (Jan. 25) show.
The star will appear on the Jan. 25 episode.
The solo performance was a nod to the band's stripped-down 1996 appearance on the then-Jay Leno-hosted late night show.
Those punkers in disguise were indeed the "Dookie" rockers and the "Tonight Show" host.
Matthew McConaughey will also be on the first post-writers' strike episode on Monday.
"Musical Stairs" features artists performing their latest hits in the Tonight Show stairwell, backed by The Roots.
