The sixth season of the American television comedy series Rules of Engagement initially received a 24-episode order and was set to debut on Saturday, October 15, 2011, but relocated to Thursdays due to the low ratings developing from How to Be a Gentleman. After CBS announced the two comedies would swap timeslots, they set the Season 6 debut as October 20, 2011 at 8:30 PM.
Effective January 12, 2012, CBS removed Rules of Engagement from its Thursday lineup, replacing it with the new sitcom Rob starring Rob Schneider. CBS announced that Rules would return to its Thursday 8:30 PM time slot at a later date. After Rob's run of its initial eight episode order, Rules returned March 29 for eight weeks of new episodes. Thus, the sixth season was cut from 24 episodes to 15.
Worried about getting his father's approval, Russell gets Liz all dolled up to meet him. Meanwhile, Jeff is more concerned about his guys' weekend being cancelled than Audrey's feelings, and Adam has a new friend (Curtis Armstrong) to drive crazy.
Audrey’s throat surgery makes her unable to speak, much to Jeff’s delight. Meanwhile, Russell tells Timmy the only way that he will get a raise is if he does Russell’s dirty work and fires someone.
When the gang decides to take a trip to Vermont to check out the fall foliage, they find themselves wishing they had never left home. Meanwhile, Russell has renewed faith in his marriage to Liz.
Jeff has found a way to talk to his wife without having to physically talking to his wife through an app on his phone by telling her what ever he wants by having his voicemail go straight to her voicemail. Adam has a salesman come to his defense after his friends pick on him for some bad choice in picking his clothes.
Audrey tries to persuade Jeff to eat healthier when he is diagnosed with high cholesterol, but he can't help sneaking around with Brenda for unhealthy food. Meanwhile, Russell tries to keep up with his new college intern on the party circuit.
In order to convince Audrey he is making an effort in their relationship, Jeff sends her on a romantic scavenger hunt, with mixed results. Meanwhile, Adam leads Russell to believe that Jen has a sex tape.
When Audrey thinks her maid needs help getting money to fix her limp, she asks her neighbors to help contribute, only to find out she misunderstood what the maid needed the money for.
Timmy is determined to reconnect with a woman he shared a romantic moment with on the subway. Meanwhile, Audrey and Jeff blame each other when they're snubbed by a couple they previously went out with.
Jeff is stumped when Audrey asks him to name five nice things about her. Meanwhile, Russell pushes Timmy to serenade a woman he likes; Jennifer and Adam mistakenly receive Audrey and Jeff's bank statement.
Jen volunteers to throw Audrey a baby shower, but puts the wrong date on the invitation. Meanwhile, Jeff takes a liking to Audrey's maternity clothes, and Russell accomplishes great things when he decides to give up women.