Gloria decides to cook more traditional Colombian meals; Claire finds out that Alex likes a boy; Mitchell and Cameron fight over Mitchell's aversion to PDA.
Claire becomes a neighborhood vigilante to stop a speeding car; Phil tries to land important listing; Jay teaches Manny to ride a bike; mysterious neighbor.
The kids try to surprise Phil and Claire, but they get surprised; Jay and Gloria's getaway is thwarted; Mitch and Cam try to get into a trendy restaurant.
Phil and Claire decide to revisit last Valentine's Day's scenario; Jay plans an elaborate surprise for Gloria; an admirer comes between Cameron and Mitchell.
Sheldon learns to become a better listener while Paige struggles to cope with her parents' divorce; Georgie avoids doing his chores by paying others to do them.
A camping trip with George Sr., Georgie and Meemaw's new boyfriend gets complicated when Dr. Sturgis joins as well; Sheldon and Missy invent their own game.
Sheldon and Georgie attempt to find platinum by mining roadside gravel; Mary worries about Missy when she tries to overcome a batting slump with religion.
Sheldon visits the CalTech campus; Georgie is angry at Mary for eavesdropping in on a conversation with his girlfriend; Meemaw tries to make Missy feel better.
Dr. Sturgis is greatly hurt when Sheldon says he plagiarized something; Mary attempts to find a girl-appropriate trophy to present at Missy's baseball ceremony.
The gang learns that Rachel is pregnant; Joey tries to impress a Broadway director who's dating Chandler's mom; Chandler's shoes make it hard for him to dance.
Joey finds a sweater from a one-night stand that Rachel had a month ago and deduces that it belongs to the father; Joey proposes to both Phoebe and Rachel.
Ross and Rachel argue over who initiated their latest tryst, so they go to Ross's video to prove who came on to who; Monica and Chandler talk about honeymoon.
Joey sets Rachel up on a date with one of his co-stars, which doesn't sit well with Ross; Ross discovers that a coworker of Chandler's has been calling him Toby
Raj must deliver a message on behalf of NASA that will announce the potential future discovery of alien life forms; Penny considers returning to acting.
Leonard gives a speech to the students graduating from his old high school; Wolowitz doubts his abilities when he and Sheldon fail to fly a remote helicopter.
As Sheldon and Leonard prepare to accept an award for their paper, they receive a visit from both their mothers; Bernadette wants help keeping the house clean.
Amy takes some time away from Sheldon to collect her thoughts; Leonard and Penny's wedding plans are uncertain as Penny comes to terms with his infidelity.
The Jokers react to a phone call and offer absurd event tickets to people on the street and the losing Joker is joined by alien ALF and his planet's cuisines.
Phil and Claire get into a fight, and Jay and Gloria mediate; Jay regrets a karaoke machine; Cameron gets Mitchell and Luke to help with a fundraising event.
Claire tries to negotiate peace while Phil sneaks off to the spa; Jay's plans horrify Gloria; Cameron unearths some disturbing artifacts while researching.
Phil and Claire decide to swap parenting roles for the day; Jay gives business advice; Cameron's illness leaves Mitchell torn over a pair of in-demand tickets.
Jay wants a quiet birthday, but the family has other plans; Claire and Mitchell get trapped; Phil runs into his old nemesis; Cameron gets into some hot water.
In search of some outdoor fun, the family heads to Wyoming where they try their hands at cattle herding and skeet shooting; Jay gets in a fight with a cowboy.
Mitch and Cam share their intentions to adopt another child with the family, but Lily's desires become cause for concern; Claire and Jay try to prove a point.
Gloria can't stand Jay's growing relationship with Stella; Cameron goes on a fast with some rather terrible timing; Claire tries to teach life lessons.