When a person thought someone or something was square they would draw the shape of a square with their forefingers in the air (out of sight of the so called "square").
Some teenage slang from the 1950s included phrases like "cool it," "cruisin' for a bruisin'," "pad," "threads," and "hot rod." These terms were often used by young people to express approval, warn of potential trouble, refer to a hangout spot, describe clothing, or talk about a fast car.
A Yank tank is Australian slang for an extravagent American car, or United States slang to a pre-1950s American car in Cuba.
Australian slang for "good on you", meaning "well done", as in a deed well executed, or as a gesture of encouragement.
Fake Out is 50's slang for a bad datejacketed: dating only one person was also called "going steady".
A square is a person who is not "cool" or "hip." This would be the person who is unpopular and does not follow the latest fashions in clothing, slang, and behavior. "Square" is an old slang term from the 1960's.
"Gesture" can function as both a noun and a verb. It is a noun when referring to a physical movement or signal made to express an idea or feeling, and a verb when describing the action of making such a movement or signal.
In its standard meaning, "moon" is a noun. In vulgar slang, "moon" can also be used as a verb, meaning to make a particular kind of vulgar gesture.
You write gesture like this: gesture.
Hip as a slang word means knowledgeable, so clueless or square would be the opposite of the slang. Square means someone who is not cool or hip or does not know the common way of doing things socially.
Your noble gesture shall not go unrewarded. That was a noble gesture. Sir/Ma'am, I am trying to gesture you forward.
crying
First attested as urban (scholatic) slang 1950s U.S. Possible portmanteau of 'doo-doo' and 'goofus', most often seen spelt 'doofus'.