Meaning: Put up, or shut up.
(One of zengeneral and masaga's roommates in their undergrad days was Jason Lamm, the third student who worked for me as a sysadmin. After I bought the four 1GHz Athlon XP Thunderbird systems that became known as the "New Elves" from a Russian distributor in 2001, Jason and I used to quote the over-the-top accent that Malkovich's Russian gangster speaks with. 2:22 - 2:41: "Yif ywuh steel dwohn't hef owull mai mahnee, thyin ywu are mayn!")
This is part of the David E. Kelley School of Advising series.