I've translated the replies to that tweet via Google Translate and found something along the lines of "The Germans don't love dad, he should go home." (in Thai, the said reply originally goes as "ประชาชนชาวเยอรมันไม่รักพ่อก็ออกจากประเทศพ่อไป๊!!"). Now, I don't know if the King being referred to...