This is a generated panconmango (mango sandwich) image, courtesy of NightCafe
And as it is quite late and feeling sleepy, I googled the meaning and get this: It means that something is incorrect or difficult to understand
ChatGPT gives me a better definition:
"Pan con mango" is a phrase in Spanish. Literally, it translates to "bread with mango" in English. However, the meaning of phrases can often change based on cultural or regional usage.
In some Latin American countries, "pan con mango" is an idiom used to refer to a situation or thing that is seen as unusual, unexpected, or a mismatch. It's similar to the English phrases "like chalk and cheese" or "apples and oranges," which refer to two things that are fundamentally different and hence not directly comparable.