David Noy, Jewish Inscriptions of Western Europe, Vol. 1: Italy (excluding the City of Rome), Spain and Gaul (Cambridge: Cambridge University Press, 1993; rpt. 2005), p. 296, no. 218 (Corpus Inscriptionum Judicarum i 566; Pompeii, 1st century):
Marthae hoc trichilinium | est. nam in trichilinio | cacat.
This is Martha's dining room. For she shits in the dining room.