ETYMOLOGY
a humorous use of Latin recumbentibus, ablative plural of recumbens, present participle of recumbere (recumb – to lean, recline, rest)
EXAMPLE
“…Ector sone to him gan take,
He thoght him venge of that wrake;
Ector bare his sword on hye,—
For he hadde no spere him bye,—
He ȝaff the kyng Episcropus
Suche a recumbentibus,
He smot In-two bothe helme & mayle,
Coleret and the ventayle…”
From: The Laud Troy Book;
an anonymous Middle English poem dealing with the background and events of the Trojan War, dating from around 1400
Lexicophilia 