Just raisin awareness.
That's every grape's raisin d'être.
I started pronouncing words backwards and forwards, with slight variation in the sounds of the consonants.
Daughter: What are you doing!? *Shriveled nose face
Dad: I'm trying to think of words that sound the same backwards and forwards. Can you think of any?
Daughter: Um, no.
Dad: I'm surprised you didn't instantly think of... Sass.
(Still would work if they come up with examples as long as they don't think of sass.)
Wife: "Look at my hands. They're getting wrinkles. I'm old. I bet my ovaries are just shriveling up as we speak."
Me: "I don't know, I think you're...ovary-acting."
Wife: [long pause and sigh] "I deserved that..."