Will Smith revealed how couples can "sustain lifelong partnerships" in a hilarious birthday video for wife Jada Pinkett-Smith. The video, which he posted on Instagram, show he and Jada on a plane about to land into Tanzania. Will Smith shared that he had made the mistake of not telling his wife something about the trip — and Jada didn't seem amused at all. 

He said, “I didn’t tell Jada that the runway was going to be dirt." He continued, [“I want to talk to y’all about sustaining lifelong partnerships. Stuff like, ‘It’s not really a runway, it’s dirt’ — you don’t say that. Your marriage doesn’t need it. It just brings up conversations that are unnecessary when once you’re down the truth is revealed. The truth comes out in the wash.”] SOUNDCUE (:24 OC . . . in the wash)

Throughout the video, Jada keeps a straight face. 

Will captioned the video, “Happy Bday babe! Sorry I didn’t tell you about the dirt runway in Tanzania…”

'RED TABLE TALK' RETURNS NEXT WEEK

In other news, Jada's show Red Table Talk returns next week on Monday (September 23rd). Jada, along with her co-hosts, daughter Willow Smith and her mom Adrienne Banfield, will be joined by guests Chelsea Handler, Will Smith, Alicia Keys and Robyn Crawford in the new episodes.

The show airs on Facebook Watch.