In the spirit of his upcoming comedy, in which he plays a man who challenges himself to say 'yes' to everything for an entire year, the comedian appeared on David Letterman's talk show naked in a bath.
And if that was not bizarre enough, it turned out respected newsman Larry King was sitting in there with him throughout.
Like Tom Cruise the night before, Carrey was invited to come on Letterman's show to read out a top 10 list, a long-running staple of Letterman's show.
Yes, sir! Jim Carrey appears naked in a bath on the Late Show with David Letterman
Squeaky clean: Jim scrubbed up for the LA premiere of his film Yes Man which he attended with girlfriend Jenny McCarthy last night
Laughing, Letterman asked if he had called at the wrong time - and if not, why on earth was he in the bath.
'Multi-tasking,' grinned Carrey, who also attended the LA premiere of his film with girlfriend Jenny McCarthy last night . 'Very, very busy.'
The actor then read out his top 10 list of 'Things Jim Carrey Will Always Say Yes To' - including one that claimed the bath idea was Letterman's.
In the list, he joked that he was responsible for the shoe-throwing attack on President George W Bush - and pretended to do an endorsement for a soap company.
He also said he always says yes to 'Sex with a big, fat roadside waitress' and one suggesting fans should offer to "pleasure me".
Saying that he loves 'fresh ground pepper' he then ground some into the water, then touched between his legs, pretending to then taste it.
'Needs more...' he said, his final word bleeped out.
The final item on his was always saying yes to 'Tub time with Larry King' - with the camera cutting away to show the respected newsman, a rival of Letterman's, sitting in the other end of the tub, still wearing his trademark shirt, tie and braces.
King and Carrey then had a champagne toast and playful flicked water at one another as the camera cut away.
Letterman then said: 'Those guys are so gay.'
Watch Jim Carrey on the Late Show with David Letterman here...