1 - On a bathroom sink faucet as water spills out of it.
RICK (tailless): I'll be honest...
2 - On a bottle of shaving cream that Rick is holding as it sprays some cream onto his open hand.
3 - On a shaving brush sitting on the sink countertop as Rick reaches for it.
4 - Back on the bathroom sink faucet. The water continues to spill out of it, but now a layer of steam rises from the basin to indicate it's piping hot. Rick holds a razor under the water to heat it up.
5 - Pull back to reveal Rick looking into the mirror. Our focus is on Rick's reflection, which has shaving cream lathered all about his goatee. Rick has started to shave it off, but most of it remains on his face. Within the mirror's reflection, we can also see that Good Rick is bound to a chair and gagged (possibly sitting in the doorway of the adjoining room), unable to do anything while his doppelganger takes on this fiendish disguise.
RICK: I don't know why I didn't think of this sooner.