It's Always Sunny in Philadelphia (2005)

S2E4 Mac Bangs Dennis' Mom

Title: Mac Dates Dennis' Mom Plot: In an effort to provoke Frank, Barbara decides to pursue a romantic fling with Mac. This unexpected relationship sends Dennis into a tailspin, prompting him to seek revenge against Mac. As tensions rise, the gang finds themselves entangled in a web of jealousy and retaliation, leading to unexpected consequences for everyone involved.