Nom de Plumber is a Nom de Plume.
Suppose that Fannie Mae posts a huge profit by writing up or even monetizing its deferred-tax assets (DTA). Given conservatorship status, we should also consider how each GSE sits de facto on the balance sheet of the US Treasury, which owes the associated tax credits. On a consolidated basis, this is simply passing money from the left to the right pocket.
If that is how Fannie Mae will earn profits to repay its bailout funding, then you can do the same for yourself with your own pockets, and become a billionaire.