Yukadon

Yukadon 床ドン (also known as Floor Slam) is the act of an individual straddling over another individual while on the floor with their arms and legs holding them up but positioned in such a way as to entrap the other individual beneath them. This action, or pose, is usually seen as an aggressive form of flirting (even if performing the pose is accidental) due to the intimacy of the pose and its allusion to sexual activity.

The action/pose is a staple trope in Japanese Romantic media and is used as a means to convey sexual tension between two characters either for comedic purposes or to establish the development of a relationship.

Trivia

 * "Yuka 床" is the Japanese kanji for "Floor" while "DON ドン" is the sound of an impact.