Leonard : Well, he's not wrong .Howarddid go to the International Space Station.

Sheldon :  Yeah, that was fiveweeks ago. How much longer is he gonna milk that cow ?

Leonard : Sheldon ,let it go. It'snot a big deal.

Sheldon :  No, no, this is aslippery slope, leonard. It starts with a parking space, where does it end ? It'slike my dad always said. "First they say you can't drink and drive. nextthing you know, you can't let your 10-year-old take the wheel while you sleepone off in the backseat.

Leonard : All that story does ismake me feel bad for you mother.

Sheldon :  Leonard, you are mybest friend. why don't you ever take my side ?

Leonard : Because  I never understand you side!