Seb, you are so fond!
Really this gif is a gem for the non-verbal language… It’s subconscious. Just a one gesture of Kimi and Seb can’t control his face. He was thinking what Kimi was doing, why he being tickled and he is so infatuated and adorable. It’s PRECIOUS! And then he bites his lip and take away his eyes for regain his selfcontrol.