Reb Penguin works in the Diamond business. He spends many days on 47th street in New York City between 5th and 6th Avenue (although he stays with us a lot also).
One of the things he likes is to find a lot of shivimers (impressive diamonds, literally 'swimmers' that are pretty enough to stand out among the other diamonds). This is especially nice when they are a mame zitser (a large diamond, literally a 'mother sitter').
This will lead to mazel and brokhe (luck and blessing) and thus a sale to a Faynshmeker (a connoisseur, although literally a fine sniffer).
That, in turn will make a deal that is parnose (livelihood) for Penguin and an apparent metsiye (bargain) for the faynshmeker.
All in all a gevinen gevinen (a win-win).
Diamond lingo is found in this NYTimes article.
