I remember that from easy back at the beginning. I expressed a concern that these little mRNA factories would start cranking out spikes all over the place. No need to worry, came back the answer, it stays in the muscle. So how come the shot isn't administered in the butt? Not some flannel arm of a senior where muscle mass is scarce? Ease of administration. Hard to do a drive through unless the cars occupants are mooning you.
Not flannel, flabby.