LAS VEGAS -- Chris Pratt and Jennifer Lawrence aren't lacking in charisma, but the two modern superstars enlivened Tuesday night's proceedings at CinemaCon in unexpected ways when Pratt dropped the mic ... on Lawrence's foot.

Pratt and Lawrence were at the annual gathering of theater owners to promote "Passengers," a sci-fi fantasy from "The Imitation Game's" Morten Tyldum out this December from Sony Pictures.

Studio chairman Tom Rothman also announced the title of their Spider-Man reboot: "Spider-Man: Homecoming." New star Tom Holland was in attendance too, fresh from the "Captain America: Civil War" premiere in L.A.

The studio also showed a look at Ang Lee's adaptation of Ben Fountain's acclaimed novel "Billy Lynn's Long Halftime Walk," Antoine Fuqua's "The Magnificent Seven," starring Pratt and Denzel Washington, and debuted a clip from "Ghostbusters."