WASHINGTON, June 29 — US President Barack Obama is a massive Game of Thrones fan, that we know, but can he name all the characters who have died on the hit HBO show?

In a new public service announcement produced by Buzzfeed to promote voting, Obama shows Americans five things that are more difficult to do than registering to vote — and one of them is listing every Game of Thrones character who has met the Grim Reaper.

"All right, you’ve got Ned, Robb, Khal Drogo, Jon — but maybe that doesn’t really count,” Obama says in the video.

"And then Hodor. That was sad,” he adds, before getting lost in his thoughts.

The other challenging tasks include stacking Cheerios, playing the Hasbro surgical game Operation, making a friendship bracelet and untangling headphones.

So can you top Obama’s effort?

The US president also tried his hand at making a friendship bracelet for VP Joe Biden in the Buzzfeed PSA. — Screengrab from YouTube