Inappropriate

Plot
When Matthew makes a little faux pas while on the air, Dave and Lisa disagree about it. They go out to discuss it. The next day when they come in, they're not as confrontational as they usually are. Beth suspects something happened. And Dave admits that something happened. And the next day when they come, Beth notices that things between them got more heated.

Summary
In the wake of Matthew's inappropriate, and obscene, pronunciation of a name in the news, Dave must try to limit the damage. Yet, much to his chagrin, Lisa takes charge and suggests an on-air apology before Dave has had a chance to react. And despite the possibility of a lawsuit, Jimmy is delighted with the mistake and hopes he can sell tapes of the error to collectors. However, after he asserts his seniority, Lisa convinces Dave to join her for dinner to discuss the matter. When Beth notices them acting strangely the following morning at work, Dave admits to having spent part of the evening making out with Lisa. Though Beth pledges to keep their little affair a secret, she warns Dave that he and Lisa are bound to have a confrontation which will alert everyone. Agreeing that an affair is unprofessional, Dave and Lisa just can't keep it from escalating even further. Meanwhile, Bill persists in trying to convince Catherine to join him for a date, while Matthew is convinced he's being fired as a result of his on-air mistake. Realizing that Lisa and Dave have gone on to have sex, Beth reaffirms her earlier warning. As Bill tries to enlist them into coaxing Catherine to join him for lunch, Lisa and Dave pledge to nip their affair in the bud once and for all, only to end up making love on his office couch. Finally, after deciding their only choice is to keep the romance a secret, Dave learns the reason behind Catherine and Bill's tense relationship -- their own inter-office affair four years ago.