Knock em dead

Do great, succeed, achieve above and beyond expectations

Johnny is nervous about his Recital.

"Knock em dead boy, you'll do great" his mom yelled from the car.

by Kotus May 21, 2011

Knock yourself out

A term for: Do whatever the hell you want, it doesn't bother me.

"dad, can i go to the park?"
"Can you get there yourself?"
"Yeah"
"well then, knock yourself out."

by donnald duck June 10, 2005

knock boots

hetero vaginal sex. The sound made sounds like knocking boots, unless one of the partners is fat

i knocked boots with your mum

by Kung-fu Jesus July 29, 2004

Don't knock it 'til you rock it

Basically, give something or someone a chance before you put it down.

1. Carl: I'm never watching Game of Thrones... I don't like fantasy.

Carol: Game of Thrones is the best show ever. Ever.

Carl: Shoot. I knocked it... before I rocked it.

2. Stan: I hate to think I'd ever eat sautéed pig stomach... it sounds gross.

Deborah: It's actually okay. My aunt makes it on Thanksgiving.

Stan: Fuck. Seriously???

Deborah: Don't knock it 'til you rock it.

3. Vern: WOW crack IS powerful.

Bert: Goddamn right it's powerful. Don't ever knock it til you rock it. Fucker.

by pdxjohnny99 January 3, 2016

knock it back

take a drink of liquor in in one swallow, or very quickly

Marlowe woke up on the floor with a hangover and throbbing from a blow to the head. He poured half a tumbler of bourbon and knocked it back. Not a cure but would have to do for first aid.
(past tense of "knock it back")

by ray jr. December 10, 2009

Turtle Knock

When two penis heads touch together.

This most commonly happens during a threesome via an act called "double penetration" when two males accidentally pull out at the same time and knock the tips of their penises together. "Hey bro, I didn't mean to turtle knock you last night, It was a total accident."

by Joeislegend05 November 16, 2010

knock the sand out

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!!!

by Tennessee_Webster November 26, 2010