Frosting

[Zipporah Schumaker]

A composition of sugar and beaten egg, used to cover or
ornament cake, pudding, etc.

[Dianne]

Any [summertime] act done, in appropriate [summer time] clothes or a state of total nudity, [in deep] snow.

[Julian]

A sexual act, in which the male, after having anal sex, ejaculates onto the butt cheeks of the receiving end, and smears it all over with his hands or penis, thus giving the illusion that the butt cheeks have a [frosting] or [glaze].
You can choose to wait till it dries after and then have someone lick it off, which is called [the birthday cake].

[Donald Trump]

A roughened matt finish on otherwise shiny material such as glass or steel.