What does N/A Mean ? :p

[x!-=cherry=-!x]

I am really confused with so many N/A
what does it mean ? i might sound silly, but im only asking, keep ya wig on :P

[meta1gearsolid2]

Not availible -.-

[the wombats]

none applicable

[Craig]

not applicable,not applied :)

[x!-=cherry=-!x]

Oh thanks.. imreally rubbish with slang well not all just that -_- :p
Ty for the help ill just stick with not available easy to remeber :)