Uninvited boners ..
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19 Nov 2010, 20:04
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Journals
Sup cf,
Some of you might have the same problem,
ur in some boring class & suddenly u see a hot chick,
or maybe you sudenly think about something that turns you on..
Well, it happends too me all the time..
Even more anoying is when you have to stand up to write something on the chalkboard or smthin ..
So tell me cf, where were you when you had your most anoying uninvited boner :>
& what do you guys do to hide it?
A boner on stage might be your worst nightmare..
Song that inspired me to make this journal
I get a boner when i think of
Some of you might have the same problem,
ur in some boring class & suddenly u see a hot chick,
or maybe you sudenly think about something that turns you on..
Well, it happends too me all the time..
Even more anoying is when you have to stand up to write something on the chalkboard or smthin ..
So tell me cf, where were you when you had your most anoying uninvited boner :>
& what do you guys do to hide it?
A boner on stage might be your worst nightmare..
Song that inspired me to make this journal
I get a boner when i think of
nice selfbust
this problem is not part of my life anymore.
everyone hating on my comment is a virgin.
I think I fap enuff tbh ..
What?
Contents
show hidden text
* 1 Design
* 2 Chalk sticks
* 3 Uses
* 4 Advantages and disadvantages
* 5 Etymology and history
* 6 Gallery
* 7 See also
* 8 References
[edit] Design
A chalkboard can simply be a piece of board painted with matte dark paint (usually black or dark green). A more modern variation consists of a coiled sheet of plastic drawn across two parallel rollers, which can be scrolled to create additional writing space while saving what has been written. The highest grade chalkboards are made of a rougher version porcelain enamelled steel (black, green, blue or sometimes other colours). Porcelain is very hard wearing and chalkboards made of porcelain usually last 10–20 years in intensive use.
The chalk marks can be easily wiped off with a damp cloth, a sponge or a special chalkboard eraser consisting of a block of wood covered by a felt pad. However, chalk marks made on some types of wet chalkboard can be difficult to remove. Chalkboard manufacturers often advise that a new or newly resurfaced chalkboard be completely covered using the side of a stick of chalk and then that chalk brushed off as normal to prepare it for use.
[edit] Chalk sticks
See also: Sidewalk chalk
Sticks of processed "chalk" are produced especially for use with chalkboards in white and also in various colours. These are not actually made from chalk rock but from calcium sulfate in its dihydrate form, gypsum.
[edit] Uses
Chalkboards are often used in teaching, although in wealthier countries their use has diminished. University lecture theatres may contain a number of chalkboards in a grid arrangement, with each column mounted on rollers to allow the lecturer to move boards into reach for writing and then move them out of reach, allowing a large amount of material to be shown simultaneously. Chalkboards are also used in many establishments (typically public houses) as a form of advertising often for upcoming events and menus and to record the score in darts matches. Also in homes, specifically in the kitchen, for writing messages, shopping lists and things to remember, as well as sometimes serving a decorative purpose.
[edit] Advantages and disadvantages
It is easier to write legibly and draw accurately on a chalkboard than on a whiteboard because whiteboards are slippery and blackboards are not.
Chalkboards have disadvantages relative to whiteboards: they produce dust, the amount depending on the quality of chalk used. Some people find this uncomfortable or may be allergic to it, and there has been speculation[by whom?] about links between chalk dust and respiratory problems. The dust also precludes the use of chalk in areas shared with dust-sensitive equipment such as computers.
The scratching of fingernails on a chalkboard, as well as other pointed, especially metal objects against chalkboards, produces a sound that is well-known for being extremely irritating to most people. Many are averse also to merely the sight or thought of this sort of contact.
[edit] Etymology and history
The term "blackboard" dates from around 1815 to 1825[1] while the newer and predominantly American term, "chalkboard" dates from 1935 to 1940.[2]
The chalkboard was introduced into the US education system in 1801.[3][4]
:)