위록지마(謂鹿止馬) wii rok ji ma
To point at a deer and call it a horse. Used for suck ups who says agrees to things that are clearly not right.
읍참마속(泣斬馬謖) ub cham ma sok
To behead Ma Su (name) while crying. In the Romance of Three Kingdoms, Zhuge Liang had to behead his favourite general Ma Su as he wept because Ma Su ignored the given command resulting in losing the war. This is used when you have to be fair for the greater good.
There are also fake yojijukugos which were created on online forums. These are not based on Chinese characters but made by taking letters from Korean phrases. But they caught on because they kinda sound like real yojijikugos :D
내로남불 nae ro nam bul
Romance for me, but adultery for you. Used for people who are lenient to themselves but strict to others.
자강두천 ja gang doo cheon
Fight of two strong-sprited geniuses. Used when two strong characters butt head with each other.