The line, "I drink your milkshake!", has been used in other media repeatedly. For example:
- In season 24 of Jeopardy!, "I Drink Your Milkshake" was the title of a category about milkshakes.
- Jon Stewart, host of The Daily Show and the 80th Academy Awards (for which There Will Be Blood was nominated for eight Oscars), has referenced the phrase "I drink your milkshake" several times on his show in response to news involving oil drilling, including during interviews with Ted Koppel and Nancy Pelosi.
- In February 2008, a Saturday Night Live skit featured a Food Network show called "I Drink Your Milkshake", in which Daniel Plainview (Bill Hader) and H. W. (Amy Poehler) travel from state to state looking for the perfect milkshake. They were joined later by Anton Chigurh (Fred Armisen), Javier Bardem's character from No Country for Old Men, and Juno (Tina Fey), Ellen Page's character from Juno, both nominated for Academy Awards that year.
- The South Park episode "Breast Cancer Show Ever" (October 15, 2008) parodies the final scene of the film: after Wendy beats up Cartman, Mr. Mackey approaches and says, "Wendy!" to which she replies, "I'm finished," as Cartman lies facedown in blood.