That title was a turn of phrase obtained from an old Exxon commercial. I mean to tell you, it is indeed an old commercial. That's where the Exxon tiger came from, I think. The slogan went "Put a tiger in your tank."
Here's the commercial on YouTube
"Esso" mean Standard Oil, JD Rockefeller's old company. If memory serves, there was some other critter known as a bee, which was associated with the company. It was the "Esso bee". Very cute.