MFWills

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: Lying to Penny but not to his sister, not inconsistent with the characters and his relationships.

LordKelvin

There's been several episodes showing Sheldon is not a good liar.

Bishop73

Yes and no. If you consider S1 E7 I think it is where he creates a very elaborate situation to avoid telling Penny she's a terrible singer. That takes a good amount skill to establish all that. But as you say, there are episodes where he can't.

Ssiscool