To annoy someone to the point of madness without realizing it.
From Shel Silverstein's short play "No Skronking," set in a diner. A customer notices a sign saying "No Skronking" and inquires as to what it means, which the waitress advises against. He persists and ends up driving her completely crazy. Produced twice, once at the Atlantic Theater Company, in NYC, and once by the Market Theater, in Cambridge, MA.
"Excuse me, is that spelled right? No Skronking? Shouldn't that say No Smoking?"
"Oh, you'd know if you were a skronker."