[Prima aprilis] Z przykroscia ale musze to zrobic

[Berud]

K = karaty czy karaluchy ? ;-)

The SI prefix for a thousand is kilo-, officially abbreviated as k—for instance prefixed to "metre" or its abbreviation m, kilometre or km signifies a thousand metres, as such, technically oriented people occasionally represent the number in a non-standard notation by replacing the last three zeros of the general numeral with "k", for instance, 30k for 30,000.

http://en.m.wikipedia.org/wiki/1000_(number)