A couple of items which have shown up in online forums in the past while:
Are These Inscriptions Known?
quidquid bene dictum est ab ullo, meum est
quidquid bene dictum est ab ullo, meum est
A couple of items which have shown up in online forums in the past while:
rogueclassicism 
I searched the EDCS and the Heidelberg database, but did not find either of those inscriptions.
I only did one unit of latin epigraphy at university but my gut feel is that first one is a fake.