Molly Shannon and Toni Collette Go From Preschool to Sex, Drugs & Karaoke in 'Fun Mom Dinner' Trailer

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"Every mom needs a time out to go all out."

So says the trailer for Fun Mom Dinner, debuting here on ET. For the four fun moms in the comedy -- played by Katie Aselton, Molly Shannon, Toni Collette and Bridget Everett (Trainwreck) -- going all out means booze, weed, karaoke with Adam Levine and a unicorn onesie. All while the hubbies tend to the children at home.

EXCLUSIVE: Meet the Moms of 'Fun Mom Dinner' -- and Check Out the Movie's Poster!

Here's the official synopsis for Fun Mom Dinner:

Four moms whose only common ground is their kids' preschool class, decide to get together for a harmless "fun mom dinner." The night begins as a disaster, but the combination of alcohol, karaoke, and a cute bartender, leads to an unforgettable night where these seemingly different women realize they have more in common than motherhood and men.

Momentum Pictures

The movie, which premiered at the Sundance Film Festival earlier this year, comes courtesy of director Alethea Jones and screenwriter Julie Rudd (who happens to be married to Paul Rudd and, yes, he makes a cameo). "I really wanted it to be kind of a love letter to moms," Rudd told ET. "Because I just found myself with this amazing group of mom friends that I met and I was surprised by how important they became in my life."

"I think moms had been a stereotypical side joke in the comedies about guys, so I thought it would be fun to make a movie about moms, where the moms are having some fun," she added. "It was important to me that they felt like real people and they felt like real moms."

Fun Mom Dinner is in select theaters and available on Digital HD and On Demand on Aug. 4.