Purloining purple paper is a particularly passionate perpetration.
To steal, often in a violation of trust. See Synonyms at steal.
To commit theft.
[Middle English purloinen, to remove, from Anglo-Norman purloigner : pur-, away (from Latin prō-; see pro-1) + loign, far (from Latin longē, from longus, long; see del-1 in Indo-European roots).]
Thank you to Angela for starting the chain of events that led to the purloining and to Zaid, my lovely nephew, who at one point started most of his words with "p" which led to my love of sentences full of "p" words.