From a IM chat with a fellow programmer:
I got a mail saying: "If you have performace problems, but also if you want to give her hours of intense intercourse..."
I suppose it refers to a tool to optimize an application.
(the original was in Italian, the translation is mine. The whole joke sounded slightly better with this part in Italian.)
My comment:
premature eja^Woptimization is the root of all evil.
