Is this the last stamp that I shall ever lick?

After all, it is a first day cover, and I am sending it under cover of darkness. I wrote the letter undercover under the covers. It is being sent to an old cove, a member of a coven, living in a house by a cove.

I posted the letter at the post office. I postulate that I will post about posting the letter. Post posting the post, it will be a past post.