Sell (one's) soul (to the devil) negative spoken language verb phrase
Used to indicate obtaining success, wealth, etc, by doing something bad.
He sells his soul for fame and prosperity and cuts ties with his family.
He's not the kind of person who would sell their soul for a seat in the cabinet.
They sell their soul to the devil and become drug dealers.
Those who sell their souls to the devil will never have a happy ending.
It is mostly used in the present tense.
A humorous way of saying that what one has said is just what they acknowledge and may not be entirely accurate
Mike: Have you returned from your vacation on the beach? Your skin seems to get tanned.
Jenny: My skin is always dark. That's my story and I'm sticking to it!