Latin Lover

Caveat emptor: Let the buyer beware
It's Latin, of course, but do we care?

Prima Facie: At first glance
Does that mean no second chance?

Quantum Meruit: As much as deserved
Assuming my Human Rights are observed!

Ultra vires: Beyond the powers
As when he's forgotten my flowers!

Confusion stretching ad infinitum-
I'm sure you're in concensus ad idem.