In an attempted gesture at humor, a joke, Rahm offered 500,000 dollars for a government “toilet” seat. Apparently the deranged and crazy governor thought this was an offer for a congressional seat. Blago just didn't get the humor.
When Rahm raised his offer for a “toilet” seat with a deferred payment of 1,500,000 Blago accepted the offer, proving he still did not understand that this was a joke about a “toilet” seat.
Rahm then reported to Obama that the crazy governor was trying to sell a toilet seat for 1,500,000 dollars. To go along with the joke, Obama said “lets buy it, I like that toilet seat, I actually sat on it for four years.”