"Who's Johnny?"
Season 4, Episode 14b
United States Airdate: May 17, 2010
Episode Guide
"Johnny Grow Your Own Monster"
"Princess Johnny"

"Johnny, wait!" – Susan

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Who's Johnny? is the second part of 53th episode and the 106th episode over all.


When Sissy considers Johnny too gross to help her with their science project, he begs Susan and Mary to change his personality, as part of their grade depends on cooperation and their ability to work together.

Full Summary


  • Johnny tries to kiss Sissy in this episode.
  • The episode title is a reference to the song Who's Johnny.
  • Running Gag:
    • Johnny's personality kept changing when he either get hit in the head or in the machine.
  • The Test Family bloodline is apparently very rich.
  • The Test Family most have dog blood line, because Johnny turned into a dog, even though it is impossible.



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