For more pointers, watch this video. These guys are absolutely amazing when it comes to explaining Japanese culture.

平身低頭
hei.shin.tei.tou

Literally: flat – body – low – head

Alternately: Extreme apology or gratitude. From the literal image of kowtowing; kneeling or prostrating oneself and touching one’s head to the ground. Still used in contemporary Japan, at least in made-for-TV dramas, to overpowering feelings of repentance or thanks.

Notes: Replacing 低 with similar-looking homophone 底, “bottom,” is an error.

This is pretty cute. The guy is apologizing, and the offscreen voice is saying “Still not enough!” The website explains that the insect on his head is a reference to a saying about bowing one’s head “like a Chinese grasshopper.”