If you dry the cup immediately after you wash it, you don’t have to “drain” it. If you don’t do it immediately, you leave it sitting in the sink (upright or inverted) and never think of it again.
If we had a talking parrot, it would bellow (among other invective), “WASH! DRY! RINSE! PUTAWAY! NOW!”
Wash. dry, then rinse?
I bet you burn before you pillage, too!