I’ll go first.
A person seeks out a fey to get a warlock pact. The person doesn’t know, however, that they’re a sorcerer with strong fey ancestry that just hasn’t manifested yet. The fey obviously agrees to the “pact” and makes a ridiculous contract that the person agrees to. The person lives their entire life believing they’re a warlock when they’re actually a sorcerer. The only thing the fey did was help the person’s magicky shit manifest.
Fat Chance?
Edit: right after posting, you gave me an idea: a character who swallowed a bag of holding in order to cheat at competitive eating. Except he or she must eat almost constantly to keep the bag overflowing so they can digest at least some of the food they ingest.
And then one day, without thinking it through, they jump into a portable hole to hide from a foe.