The Big Bang Theory Season 1 - Episode 15

"The Shiksa Indeterminacy"



The episode is sometimes called The Porkchop Indeterminacy. The guys see an attractive woman in Sheldon's office and can not believe their eyes. The woman turns out to be his twin sister Missy (Courtney Henggeler), who was in town for a wedding and needed Sheldon to sign some papers for her father's estate. The boys are smitten with her and Leonard insists she stay with them. The boys instantly try to hit on her causing Penny to come to her rescue.

Meanwhile Leonard becomes sneaky and convinces Sheldon to be protective of Missy (so he can have a chance at her over the other guys)...however much to Leonard's chagrin Sheldon forbids him to go out with her sister as well. Upon learning what Sheldon is up to Missy has a heart to heart with Sheldon and after getting crotch-punched by Missy, Sheldon agrees "Missy can date whoever she wants". After a Wii Boxing battle Leonard wins first chance but Missy turns him down (something they had apparently not expected). Wolowitz tries next but she turns him down as well.

Meanwhile Koothrappali takes part in a drug trial, for a drug that can cure his extreme shyness and inability to talk to attractive women. It works (with side effects) but when it comes to asking Missy out the drug wears off and he is unable to speak to her, forcing him to leave defeated. Adding insult to injury, it seemed Missy would have given him a chance, saying when she answered the door that she was 'hoping he'd show up'. The title refers to the Yiddish word for a "non-Jewish woman".
The Porkchop Indeterminacy alias title refers to Wolowitz stating that he'd kill his rabbi with a porkchop to be with Missy.