The act of deliberately elongating an already overlong and dull story by asking obtuse questions regarding the minutiae of said story.
Dull man; So I was wandering down the street an...
Kittle-picturer; How fast were you walking?
Dull man; Erm...I don't know, walking speed..anyway I was walking down the stree..
Kittle-picturer; Was the street busy? Were you on the pavement or in the road?
Dull man; ....you don't want to hear the story do you?...are you kittle-picturing?