Laura Hertzfeld
September 20, 2013 AT 01:30 PM EDT

Could Barney (Neil Patrick Harris) and Robin (Cobie Smulders) be just a little too perfect for each other? Like sharing DNA too perfect? The happy couple is in the thick of wedding preparations in the season premiere of How I Met Your Mother, and as they head out to Farhampton for the big day, they discover something else they might have in common.

But the scare is totally worth it for Barney’s brilliant Game of Thrones shout out. Check out the exclusive clip below to find out which shady character he references in the back of the car.

How I Met Your Mother returns for its ninth and final season on CBS Monday at 8p.m. ET.

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