Used appropriately, "knock the sand out" is an alternative way to tell a guy when he is being a pussy and needs to man-up. Origins of the original phrase "knock the sand out of your vagina..." can be found on an early season episode of South Park. (Cartman speaking to Kyle)
ESPN Reporter: Vince Young is being kept overnight at Vanderbilt medical center, his family and teammates fear he may be suicidal after today's loss and season-ending thumb injury which will need surgery.
Titans fan: Wow, VY... KNOCK THE SAND OUT!!!
Titans fan: Wow, VY... KNOCK THE SAND OUT!!!
by Tennessee_Webster November 26, 2010

Commonly called 'the short strokes' - - this is the stage of sex where you have been holding your nut for a while until she's been fucked silly, then you assault that thing in a frenzy; and you are digging that out deep, deep, deep - - - slamming into the bottom of that pussy with them short strokes for the ten or twenty minutes it'll take to get your nut. If you do it right, you can get that snapper stinging good.
by Bohicachief March 4, 2021

As he stood at the podium wearing his MAGA cap and getting a blowjob from a twenty-something supporter, the crowd’s chant of “knock her up!” was deafening.
by Dr Bunnygirl July 27, 2019

by ThatBoiNick July 7, 2017

To learn something (usually a life lesson) the hard way. (Some say the best way to really learn is to learn from your mistakes.)
by PlaceHolder June 16, 2004

To have a life that is difficult, where the elements of the world seem to be against you all the time.
For example, life on the streets, the life of a hustler or a dealer.
For example, life on the streets, the life of a hustler or a dealer.
Jay-Z's "Hard Knock Life"
It's a hard knock life for us, it's a hard knock life for us, instead of treated, we get tricked, instead of kisses, we get kicked, it's a hard knock life
It's a hard knock life for us, it's a hard knock life for us, instead of treated, we get tricked, instead of kisses, we get kicked, it's a hard knock life
by cErTiFiEd November 24, 2004

"I am not in danger, Skyler. I am the danger. A guy opens his door and gets shot, you think that of me? No. I am the one who knocks!"
by Evish7898678 October 19, 2022
