The Spaghetti Catalyst
The Big Bang Theory Season 3 Episode 20 (05/04/10)
Recap
After Penny and Leonard break up, Sheldon goes behind Leonard's back to hang out with Penny to have spaghetti dinner at her house. After finding out, Penny and Leonard agree to share custody over Sheldon and eventually decide to try and be friends.
Sheldon: Would you like some aloe vera? You just got burned.
