This is when you take a long shit and roll it into a donut shape and cum on the top of it. You the freeze this donut shaped, cum covered shit to make the cum into a glaze consistency. After this is ready, remove the shit from the freezer then finger your girlfriend, wife, or depending on the state, your sister, while she is on her period, then flick your fingers over the donut to give the donut the appearance of sprinkles. When this is done, serve it at the next family dinner to the in-laws.
The act of a generally female sex partner consuming a half-dozen unfrosted donuts and thereafter swallowing an appropriate volume of semen in order to spread an even layer of "frosting" on each.
Gee, im really craving a frosted donut tonight Carl.