To me are bedroom joys revealed,
Enjoy at will, my lips are sealed.

[Dulcis conscia lectuli lucerna,
Quidquid vis facias licet, tacebo.]

Marcus Valerius Martial
Martial (AD c.39-c.103) Spanish Roman poet, satirist, epigrammatist [Marcus Valerius Martialis]
Epigrams [Epigrammata], Book 14, epigram 39 (14.39) (AD 84-85) [tr. Whigham (1987)]
    (Source)

"A Bedside Lamp [Lucerna cubicularis]". (Source (Latin)). Alternate translations:

Privy to nocturnal glee;
Nought I say, of all I see.
[tr. Elphinston (1782), "The Chamber-Lamp," Book 11, ep. 17]

I am a night-lamp, privy to the pleasures of the couch; do whatever you please, I shall be silent.
[tr. Bohn's Classical (1859), "A Night-Lamp"]

I am a lamp, privy to the pleasures of your couch: you may do what you will, I shall be silent.
[tr. Ker (1920), "A Bedroom Lamp"]

A lamp am I, aware of your joy in bed:
Do what you will, not one word will be said.
[tr. Bovie (1970)]

I am a lamp, confidante of your sweet bed. You may do whatever you will, I shall be silent.
[tr. Shackleton Bailey (1993), "Bedroom Lamp"]

I show but do not countenance what you do.
Douse me. The only record is in you.
[tr. Porter (2010), "A Bedside Light"]