When my son was young and at his frustrating Best...instead of the usual punishment..hubby used to say...if you do that again...I'll stick me Tongue in your Lug......
Son would do it again..cue hubby chasing him around the room with his tongue waving..making Hanibal Lechter noises and son running round the room Screaming.....
I always used to Think...when he is a teenager...some poor unsuspecting girl will nibble his ear...and son will be off like a whippet...squealing.......and she'll be like WTF.........................
There are Much Better ways of Torturing your Kids without Grounding them....