What's that on your face?

Possible appearances to the contrary, this isn't about my lack of shaving.  More a public service announcement:

If you make coffee using an Aeropress (recommended)

AND

Use the inverted method (recommended by many, though I've never really had it work)

AND

Spill coffee grounds on the bottom of the tube because you're not using the funnel.

It is, theoretically, possible to clear the grounds off by blowing on them.  In practice, however, you're likely to accidentally blow into the tube of finely ground coffee.  Which will end up in your eyes, the coffee mug, the floor, etc.