Taking a piss in a urinal that has that pink cake deodorizer caged up in
the bottom. You must exert maximum force so as to drill into the cake flaking off as much as possible during the piss session.
It is normal to have a goal in mind such as: I'm going to be first to bust through the cake, or I'm going to make
pink lemonade.
Also known as "going to bust cake", "waging war on the cake", and "making the cake pay", and "ruining the birfday cake".