Pressure cooker was the name of a Head of Household competition (BBUS’s nomination challenge). It involved HG’s standing in a cage with their finger on a button, if the button was released they’d be eliminated. The last person standing is the winner. Also you could only leave the cage in 3’s so it involved some HG’s waiting inside the cage for hours before another HG’s dropped. Once someone was eliminated they got to open a box that would either contain a prize or punishment. This competition went on for 14 hours. Fans loved it because it resulted in some banter from the HG’s, promises made, and was broadcast live on the feeds.