Lily tries to comfort Barney who is enraged at the idea of Ted and Robin sleeping together again. Lily tries to get Barney to admit he still has feelings for Robin.
Barney: So I explained to her, I said Madelin, every single international conflict essentially boils down to sexual tension Ted: Every international conflict? Barney: Every single one, dude Ted: So the crisis in the middle east could be solved by? Barney: Gaza Strippers. Next. Ted: Apartheid? Barney: Apart Thighs? What else you got? Ted: Cold war. Barney: Ms. Gorbachev, Take Down Those Pants