Spoiler
LEONARD: I don't want to go to Texas!
HOWARD: And I do? My people already crossed the desert once. We're done!
At home, Sheldon is getting used to doing things the way he used to, which includes prayer before every meal. But his mom was nice enough to cut a smiley face into his grilled cheese, so a little "God's neat, let's eat" never hurt anybody. She recalls that they had sat together like this when he was a kid, when the neighborhood kids would hate him. Sheldon thinks they were too stupid to know they hated him because of his intelligence, but actually they did know that.
Leonard, Howard, and Raj make it down there. Raj is disappointed he won't get to see a cattle drive, but at least they have steaks on sale at the Costco. It turns out Raj can't talk to Sheldon's mother, either. However, a woman at her church might be able to do a healing thing she does with the crutch and wheelchair crowd, and she might be willing to take a shot at "whatever Third World demon is rolling around" in him. Leonard wants to get back to L.A. quickly. ("A girl? I've been praying for you."

She calls Sheldon out, but Sheldon refuses their apology, as he is convinced he is now destined to teach Evolution to a bunch of Creationists.
MRS. COOPER: You watch your mouth, Shelly. Everyone's entitled to their opinion.
SHELDON: Evolution is not opinion, it's fact.
MRS. COOPER: And that is YOUR opinion!
(pause)
SHELDON: I forgive you. Let's go home!
MRS. COOPER: Don't tell me prayer doesn't work!
Finally returning to L.A. Leonard can get back to Penny, and they FINALLY have sex! Leonard doesn't see why it has to be weird for friends to have sex. They were friends, and now they're more than friends. It is what it is.
PENNY: Leonard? It's weird.
LEONARD: Totally.
[This message has been edited by Losman (edited 9/22/2009 5:34p).]