Here is a Spanish expression that uses a food word:
¡Vete a freír espárragos!
It means get lost, go jump in the lake, go take a hike, get out of here.
Now, I don’t know how to cook anything except in the microwave. I have no idea how to cook asparagus. Apparently, it takes a longer time to fry asparagus as opposed to boiling it. So if you tell someone to go fry asparagus, they will be occupied for some time and they will leave you alone. You can find an explanation in Spanish of the origin of this saying at Columna Zero.
You can learn about other Spanish food expressions at Español Extranjeros Victoria Moreno.
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