Whisk together the sugar, flour, and cocoa powder.
Add the eggs, melted butter, sour cream, and buttermilk.
Add the espresso and hot water.
Combine the wet and dry ingredients.
Grease the Bundt pan.
Bake the cake.
Make the chocolate ganache by heating the heavy cream and dark chocolate.
Make the chocolate whipped cream by whipping the heavy cream, cream cheese, powdered sugar, cocoa powder, salt, and vanilla.
Pipe the chocolate whipped cream onto the cake.
Decorate the cake with a disco cowgirl boot, disco balls, and puppies.
