Robin reveals that she auditioned as a "currency rotation specialist" (coin-flip bimbo) in the game show Million Dollar Heads or Tails, hosted by Alex Trebek.
After buying the patrons of MacLaren's designer clothes, toys and condoms, and taking them to a strip club, Barney goes to see Sam Gibbs, his brother's father and a minister, to make a donation to his church.
He begins to write a check for $10,000 when he gets the news about the false positive, and adds a decimal point to turn it into $100, returning to his selfish ways and, indeed, buying his diamond-striped suit.
Immediately after they discover and announce the pregnancy test's results, Marshall and Lily secretly begin to panic about how unprepared they are to raise a child, and scramble to complete pre-delivery remodelling of their apartment in one night.
When Robin and Barney agree with them, Ted angrily smashes the gingerbread house and orders everybody to reconsider their decisions, forcing Marshall and Lily to go straight back home to try to conceive, yelling to the "criminals of New York" about Barney's suit, effectively making him a walking target for theft, and ordering Robin to take the research job.
When Punchy calls him, suffering the predicted cold feet, Ted angrily orders him to get married, solving that problem as well.