It's Always Sunny in Philadelphia (2005)

S4E2 The Gang Solves the Gas Crisis

Charlie, Mac, and Dennis hatch a scheme to capitalize on soaring gas prices by stockpiling fuel now for a future sale at a profit. However, as is typical for them, their plan quickly spirals out of control. Meanwhile, Dee discovers that Bruce intends to donate the family fortune to a Muslim cultural center, prompting her and Frank to plot against him in a bid to seize the money for themselves.