戳咕

戳咕	chuō gū	to stir up behind sb's back / to incite secretly
戳	chuō	to jab / to poke / to stab / (coll.) to sprain / to blunt / to fuck (vulgar) / to stand / to stand (sth) upright / stamp / seal
咕	gū	(onom.) for the sound of a bird, an empty stomach etc