Just For Fun

All Wet: Wrong or mistaken.
Applesauce: Nonsense: an exclamation of disbelief.
Bee's Knees/Cat's Meow/Berries: Something excellent or the best.
Big Cheese/Shot: An important person, the boss.
Balled Up: Confused or messed up.
Blow: To leave: to have a wild party.
A Boon: This word was used to mean a favor or a very helpful gift. A generous act itself
could be called "a boon."
Bull Session: An informal talk among men, often about exploits.

Cat's Pajamas: Something wonderful, same as the Cat's Meow.
Cheaters: Eyeglasses.
Darb: Something or Someone excellent.
Dumb Dora: A stupid girl or woman.
Fall Guy: A scapegoat, someone framed.
A Feather in (One's) Cap: This phrase was used to signify a significant achievementor honor.
Flat Tire: A dull or disappointing date or person.
Gams: A woman's legs.
Giggle Water: Alcoholic drinks.

Hip to the Jive: Cool or trendy; related to the music's vibe.
Hotsy-Totsy: Pleasing, just right.
Jalopy: An old, run-down car.
Joint: A club or establishment, often illegal.
Keen: Attractive, appealing.
Kudos: While a common word today, it was in use in the 1920s and means praise and honor received for an achievement.
Moll: A gangster's girlfriend.

On the Level: Honest, legitimate.