The phrase "wet fingers" refers to having a good sense or intuition about something. It means being skilled or experienced in a particular area, just like how wet fingers enable you to have a better grip on things.
Sentences with «wet fingers»
In most cases, it recognizes fingerprints even with wet fingers on the first try. (androidauthority.com)
Using wet fingers press the mixture into the prepared pan and bake it for 1 hour. (lundberg.com)
The display screen is covered with mineral glass coating which is scratch resistant and the touch works perfectly well even when your fingers are wet (wet finger tracking). (gogi.in)