Chuck and Blair are faced with the most difficult decision they have ever faced as a couple. Jack says Blair has to sleep with him for Chuck to get the hotel back. Blair goes to do it, then Jack tells her Chuck organized it. Serena plans a surprise birthday party for Nate, but Jenny does her best to sabotage Serena’s efforts. Dan and Vanessa’s new relationship hits a bump in the road, when they have to evaluate each others' work.
Title comes from the 2009 film Inglourious Basterds.