![Big Bang Theory plot hole: Sheldon quote creates error in Leonard's childhood | TV & Radio | Showbiz & TV | Express.co.uk Big Bang Theory plot hole: Sheldon quote creates error in Leonard's childhood | TV & Radio | Showbiz & TV | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/20/590x/secondary/Big-Bang-Theory-plot-hole-Leonard-managed-to-miss-his-party-2575093.jpg?r=1595016837109)
Big Bang Theory plot hole: Sheldon quote creates error in Leonard's childhood | TV & Radio | Showbiz & TV | Express.co.uk
![The Big Bang Theory on Twitter: "Does Penny not know Leonard's birthday? # BigBangTheory https://t.co/xUHsEQIPC3" / Twitter The Big Bang Theory on Twitter: "Does Penny not know Leonard's birthday? # BigBangTheory https://t.co/xUHsEQIPC3" / Twitter](https://pbs.twimg.com/media/CUN4gdSXIAAMt7h.png)
The Big Bang Theory on Twitter: "Does Penny not know Leonard's birthday? # BigBangTheory https://t.co/xUHsEQIPC3" / Twitter
![The Big Bang Theory on Twitter: "Happy Birthday Kunal Nayyar and Johnny Galecki! Share your favorite moments with Raj and Leonard below! https://t.co/RtZbjyC7aZ" / Twitter The Big Bang Theory on Twitter: "Happy Birthday Kunal Nayyar and Johnny Galecki! Share your favorite moments with Raj and Leonard below! https://t.co/RtZbjyC7aZ" / Twitter](https://pbs.twimg.com/media/E0PU6WLUYAQYtE8.jpg)
The Big Bang Theory on Twitter: "Happy Birthday Kunal Nayyar and Johnny Galecki! Share your favorite moments with Raj and Leonard below! https://t.co/RtZbjyC7aZ" / Twitter
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