Three coders - one from Windows, one from Solaris and one from Linux

Three coders (one from Windows, one from Solaris and one from Linux) down at the toilet. Here comes the one from Windows, uses half liquid soap, wipes his hands with half a roll of paper, and tells the others:
- at Microsoft we learn that there is no matter how many resources consumed, if the job gets done well.

Then the one from Solaris comes, washes his hands but with less soap, wipes with less paper and it says:
- at Solaris we learn that resources must be saved if the functionality exceeds 90%.

Then the one from Linux comes and doesn't washes his hands. The others were amazed:
- What, you do not wash your hands?
- At Linux we programmers have learned not to piss on our hands.