Actual first names that I have encountered in my career:
Men
McWillie (gimme a mcwillie, fries and a large coke please), Lemonjello (pronounced Lamonjayllo), Lavoris (I believe he had a brother named Scope), Gray, Tiberous and Male (pronounced Mallee).
Women
Lexus, Mercedes (and most high end rides), Female (pronounced Feemallee), Fence (?), Tyanot.
There are many others, but you got me started.
G