petty, mean-spirited criticism; petty fault-finding
His review of my book contains nothing but carping over typos and other minor oversights: he could not find a single serious error in it.
carpere (to slander, revile) (Latin)
If you will ping with your car horn, people will shout at you. they will complain. carping. Car+p (ark)+ing; Many people find faults in ur carparking style