![](https://image.tmdb.org/t/p/original/9Wchiz14i3FcHUpVpuhFzgo0VOE.jpg)
![](https://image.tmdb.org/t/p/w342/1zqsOPFRgYgsbL2aboYzc9sYPKl.jpg)
Little Big Zack
Zack's fear of growing up causes him to regress back to childhood when he discovers that he is going to have a Bar Mitzva Celebration at his church. Zack actually transformed back to when 7 years old, and he started acting like a child while Spencer try to figure out how to get the teenage Zack back. Zack's Bar Mitzva was getting nearer while Zack stayed in school and fooled around, causing trouble for Spence and Cam. Spence needed to make Zack feel more grown up and ready to accept the responsibilities of a boy who is becoming a man.
![](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
Other episodes for this season
![Blast from the Past](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Searching for Zack Greenburg](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![The Terrible Truth](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Groovin'](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![What's Eating Zack Greenburg?](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![In Your Dreams](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Captain Sonic](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Zack Zero](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Zack Girl](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Dead Men Do Wear Plaid](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![The Frog Prince](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Things to Do at Horace Hyde When You Are Dead](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Bionic Zack](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Attack of the Zack-uum](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Once and Future Zack](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Kleptomanizack](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Zack Times Two](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Pop!](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Zack and White](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Little Big Zack](https://image.tmdb.org/t/p/w300/9Wchiz14i3FcHUpVpuhFzgo0VOE.jpg)
![The Eyes of Gwen Killerby](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Zack Greenburg's Day Off](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Almost Famous Almost](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![The Zack Show](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Who Did You Say I Was?](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)
![Zackeo and Juliet](https://image.tmdb.org/t/p/w300/5MVJOBdpAZ1n8GWpEADfZBdjzRS.jpg)