1)"The 70s" peace symbol
A combination of the semaphore signals for the letters "N" and "D", standing for Nuclear Disarmament. In semaphore the letter "N" is formed by a person holding two flags in an upside-down "V", and the letter "D" is formed by holding one flag pointed straight up and the other pointed straight down. These two signals imposed over each other form the shape of the peace symbol (coincidentally, considering the organization for which it was created, resembling a stylized, skeletal missile). In the original design the lines widened at the edge of the circle.

2)see V Sign

When someone goes to the gym and spends 90% of the time on their phones scrolling through social media

The peace symbol, contrary to popular belief the peace symbol is two aviation flag symbol N and D. the peace symbol was first founded by a cult in 1946 that would promote worldly nuclear disbarment. Joining this cult would entail an extremely harsh beating, burning and sometimes partial drowning. Only after under going the ritual, only then could they wear the sacred symbol, more formally known as the Peace Sign. Also by wearing this symbol, would mean that you were dedicated to world wide disarmament of nuclear and biological weapons indefinitely; in other words you would stand in front of a detonation location; until death or detonation of weapon. This cult is now known as Greenpeace.

Where a person holds there index and middle fingers up spread apart to symbolize peace. A common sign of the 1960's hippie generation and of theneohippie movement. To the world war II generation it meant victory but to hippies and neohippies peace is victory.Known to make police and conservatives angry.

In one book, Stephen King calls it "the footprint of the Great American Chicken".

a lit ciggarette that a person is smoking.

The peace sign is literally a broken cross.