can't smoke a rock 

no brain no pain, you can't wear me out

that dude can do pushups all day long but he is fucking stupid, you can't smoke a rock.

can't smoke a rock by #1Slick May 25, 2007

can of worms 

a source of many unpredictable and complicated problems

fairfax high school is nothing but a can of worms

can of worms by irishrepublicanarmy January 2, 2004

Can you hear me now? 

The next time that Verizon Wireless guy says this overrought old cliche that has worn out its welcome and was already stale before this shitty decade even began, I'm gonna throw an Ottoman stool at the damn TV and watch an electronic flash as the screen is shattered from the impact.

1. I turn on the TV. It's commercial time beings that a show has just ended. The Verizon guy whips out his cell phone. YES he says it AGAIN: "Can you hear me now?"
"AAAAAAAAHHHHHH!!!!!!" #SMASH!#

2. Not only can I hear you now but you're annoying the hell outta me! You'd better shut it up now!

Can you hear me now? by I Saw U2 Live Twice June 4, 2009

Can't Not

a double negative that means you can.

I can't not breath here

Can't Not by thatguythatyoudon'tknow July 3, 2011

can i haz cheese burger 

start with amazingly funny pics of cats doing funny things text was added most then it was dubbed lolcats popular was can i haz cheeseburger

the kitty said can i haz cheese burger!

can i haz cheese burger by iwiniwiniwin October 24, 2008

Can't Milk a Horse

Used as an exclamation when noting an obvious or moronic error in judgment. Usually suggesting complete unworkability. Also used to designate a situation one tries to take advantage of, where there is no actual advantage to be had.

#1: "I really thought my new pet snake and my hamster would get along. Well, I guess you can't milk a horse."

#2: Jerry - "So I tried to milk this horse and well... you know what they say: 'You can't milk a horse'."

#3: Fred - "I just tried to hit on Nancy at her ex's funeral, but ya can't milk a horse."

#4: "I invested $8,000,000 on the new line of Pogs, but goddam: Ya can't milk a horse!"

Can't Milk a Horse by Skazu March 4, 2010

Can't even kink a hose 

Used to describe ones lack of skill in normally easy tasks. Like kinking a hose.

Friend one: Man, this guy is so stupid he's doesn't know how to make himself lunch.
Friend two: That guy can't even kink a hose.

Can't even kink a hose by Ali and Amanda July 28, 2010