The Mirrored Road into the Interior

So you would think that IM would be a perfect medium for all sorts of knock knock jokes. Including ones that are based on word similarities that aren't reflected in the sounds of the words.
Except it is apparently almost impossible to tell a knock knock joke online.

Seriously, I got one subject to the "whose there" section before they got confused and wandered off.
examples:
(11:16:24 PM) roninkakuhito@gmail.com/Home: knock knock
(11:17:28 PM) Subject 1: ?
(11:17:34 PM) roninkakuhito@gmail.com/Home: knock knock
(11:17:42 PM) Subject 1: what sort of monkey is at my door?
(11:17:54 PM) roninkakuhito@gmail.com/Home: knock. knock.
(11:18:32 PM) Subject 1: guess it's not a talking money...
(11:18:40 PM) roninkakuhito@gmail.com/Home: *sigh*
(11:19:37 PM) Subject 1: pats

(11:25:19 PM) roninkakuhito@gmail.com/Home: knock knock
(11:32:30 PM) Subject 2: hey man
(11:32:45 PM) roninkakuhito@gmail.com/Home: knock. knock.
(11:35:30 PM) Subject 2: yeah?
(11:36:34 PM) roninkakuhito@gmail.com/Home: nothing...
(11:36:35 PM) roninkakuhito@gmail.com/Home: hey
(11:36:41 PM) roninkakuhito@gmail.com/Home: how goes
(11:36:42 PM) roninkakuhito@gmail.com/Home: it
(11:36:43 PM) Subject 2: oh.
(11:36:45 PM) Subject 2: who's there?
(11:36:49 PM) roninkakuhito@gmail.com/Home: you know

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