Is there a term or a phrase for something that is both literally and figuratively true?
Solution 1:
You can add "in both senses of the [word or phrase]." For instance, "I put my best foot forward" becomes either "In both senses of the phrase, I put my best foot forward" or "I put my best foot forward, in both senses of the phrase."
Solution 2:
"Pun [not] intended", perhaps.