To be told off for criticizing an open source project without making an attempt to improve the situation you are criticizing or at least admit you have not attempted to rectify the situation. Named after Van Lindberg, lawyer for the Python Software Foundation. John should be lindberg'd for complaining about the datetime module without trying to fix the problem he is upset about.
[Thanks to Steve Holden
for the photos used in the presentation]
The slides for the talk can be found here