Watch: Chris Hemsworth Stars in Red Band Trailer for 'Vacation'

The red band trailer for Vacation, the upcoming reboot of National Lampoon's Vacation, has arrived and it's pretty clear this one might not be nearly as tame as the 1983 original.

Starring Ed Helms and Christina Applegate as an adult Rusty Griswold and his wife Debbie, the newly released trailer is greatly overshadowed by co-star Chris Hemsworth, who plays Rusty's very uninhibited brother-in-law.

The trailer finds the Griswolds visiting Rusty's sister Audrey (Leslie Mann) and her husband Stone (Hemsworth), the latter of whom shows up in just his underwear in Rusty and Debbie's room, giving the couple (and viewers) an eye full of his "endowment."

Watch the trailer below (Note: It's definitely NSFW). The film is due in theaters on July 29.