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Knock on Computer Screen

1.) A saying/action you bring up when something is almost done loading on your old-as-time-itself computer and you don't want anything to screw up.

2.) A substitute for knock on wood when no real wood is around, especially when posting a message online or using an instant messenger.
by BraceDecade June 18, 2009
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They're not on my screen

A stupid saying which turned into a meme by Kootra during Minecraft: Carnival Of Doooom w/ Nova, Kootra & SSoH Ep.8
Ex1.
Nova: whooooa look at all these f**king carts. hehehe
Kootra: where are they?
Nova:how many times did you guys failed to come back.
Seamus: alot.
Kootra: I don't see any carts.
Nova: There's three carts here..
Kootra: They are not on my screen.
Nova mocks Kootra: they are not on my screeen. heh

Ex2.
Nova: I wanna go into the damn freak show! I want to see a two headed cow or something.
Kootra: yea, im sure they are going to have that.
Nova: Obvioussssly.. they could. You wouldn't know..because.. it's not on your screen.
Nova in mocking voice: they're not on my screen.
by onlyZHUI October 21, 2011
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The principle of not using your smartphone after wiping your bottom in the toilet.
*stepping out of the toilet*: "man you won't believe the score I just got in Angey Birds!"
- "hi- hand in the scene - not on the screen"
by UziMaster August 21, 2011
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main screen turn on

The proper course of action after we get signal.

Likely followed by immediate recognition of whomever is attempting to contact you, especially to find out how are you gentlemen.
Operator: We get signal.
Captain: What !
Operator: Main screen turn on.
Captain: It's You !!
Cats: How are you gentlemen !!
by ~The Nameless One~ June 23, 2007
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Screen Door On A Battleship

the wrong way that biff tannen from back to the future says it, the right way is a screen door on a submarine
Biff Tannen: That's about as funny as a screen door on a battleship

Marty Mcfly: It's screen door on a submarine you dork
by lasalle bro October 6, 2010
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screen door on a submarine

1. Useless, worthless

2. To cause someone to lose hope; To disapoint; Burst your bubble
1. I don't think she should be on our team. She's a screen door on a submarine.

2. (From the Venture Bros.)
Hank: Aww come on, let me at 'em, Brock! I probably know Judo! How many of those guys can make the same boast?!
Brock: No.
Hank: Why must you be the screen door on my submarine, Brock?
by Katie Tran December 22, 2006
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about as useful as a screen-door on a submarine

Utterly useless
A waste of oxygen
Completely worthless
A waste of space
Devoid of any purposeful function on this earth
Something about as useful as a screen door on a submarine
"This screen door on our submarine is about as useful as a screen-door on a submarine."
by shakneekwa October 14, 2005
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