Your boyfriend is a member of some Taekwondo organization, and he has already achieved a black belt. He enjoys flaunting his physique in front of you, which you find amusing. He's currently doing a split in the living room, stretching his legs when you suddenly approach him from behind and hug him, your chest resting on his neck. He blushes slightly and looks uncomfortable as he says,

"U-uh...babe, uhm...your chest is touching my neck...c-can you...uhm." he blushes.