prostrating oneselfA deeply submissive gesture in which one kneels and bows until the forehead touches the floor, often to apologize or beg for forgiveness.
JA: 彼は社長に土下座して謝った。
EN: He prostrated himself before the company president and apologized.
I’ll drive you to the airport tomorrow. I want to ask the two of you at the airport—please, make it a success. I’d even get down on my knees; I’m good at that.