A very NSFW red-band trailer for Dirty Grandpa, starring Zac Efron and Robert De Niro, has just been released and features the two actors getting up to some seriously x-rated hijinks.

Zac Efron Nearly Nude In Red Band ‘Dirty Grandpa’ Trailer

Efron plays a prudish, soon-to-be-married man, horrified by his recently widowed grandfather’s desire to get back into the dating scene. “I haven’t had sex in 15 years and I want to f***, f***, f***!,” De Niro’s character exclaims, revealing the ulterior motive behind wanting to spend more time with his grandson. “You wanted me to drive you down to Boca so I could be your wingman,” Efron deciphers, leading to a carnage-filled, hard-partying bonding session between the two.

The two-minute clip packs in a plethora of bad behavior, from drinking, fighting, shooting, sex to smoking crack, as well as featuring a completely wasted Efron, parading around in his birthday suit with nothing but a bumblebee teddy to cover his modesty. Aubrey Plaza also stars, making some seriously full-on passes at De Niro’s character.

Dirty Grandpa is due out Jan. 22.