Sacha Baron Cohen gatecrashed the 'Baywatch' movie set on Tuesday (08.03.16) to show Dwayne Johnson and Zac Efron an elephant sex scene from his new film 'Grimsby'.

Dwayne Johnson's Instagram post

Dwayne Johnson's Instagram post

The 44-year-old actor stopped by in character as Nobby Butcher and had Dwayne and Zac in stitches when he shared a clip of Nobby and his spy brother Sebastian Butcher - played by Mark Strong - helping a male elephant mate with a female animal with disgusting consequences for the fictitious siblings.

Dwayne took to his Instagram account to share the unforgettable experience with his followers, posting a video of his and his co-star's reaction to the graphic scene as Sacha dressed as Nobby looks on in amusement.

The accompanying post read: "WTF craziness & fun go to a whole new level on our #BAYWATCH set when our boy Sacha Baron Cohen (in character) stops by. We were chatting about his new movie coming out #BrothersGrimsby and I said "Well show us something". He said "You sure?" We said "Hell yes we're sure". Well if you listen closely you'll hear an ELEPHANT ROAR followed by me and @zacefron's reactions. (sic)

Dwayne, 43, insists he and Zac, 28, will never forget what they saw and now have a "deeper respect" for elephants.

His post continued: "There are some things in life we can't ever UN-see ... what we just witnessed will no doubt make cinematic history. Enjoy #BrothersGrimsby from the brilliant/crazy mind of SBC.

"#OnSet #BAYWATCH #FootageOfBrothersGrimsby We now have a "deeper" understanding and respect for elephants... (sic)"