A knuckle dragger. = Someone who is not polite or smart.
Many of the anti-Trump people are knuckle draggers.
To half-step. = To go halfway.
Instead of going forward, some people half-step their way through life.
To dish it out. = To do something.
He is a hard guy, it's difficult to take what he dishes out.
To shake a leg. = To move quickly.
In the morning, I have to shake a leg to get to work on time.
Amen. = So be it or that's right.
When the Tigers win Nippon series, Osaka will be happy. Amen.
All green lights.= Go forward with no stops.
I wish you all green lights this year.
To throw back some brewskis.= To drink beer.
Sometimes after work, the crew goes out and throws back some brewskis.
To be as dumb as a rock.= Not really smart, stupid.
In the morning, I sometimes feel as dumb as a rock.
The whole nine yards. = Everything.
When I train, I do the whole nine yards.
To shrug one's shoulders. = To move one's shoulders up and down.
If you don't understand, shrug your shoulders.