Al Parker, the gay porn star, worked at the Playboy Mansion before becoming the big porn star, and saw Tom Jones's dick in the john, when Jones didn't know he was looking. Said that it was indeed big, this is in Al Parker's book CLONE, which is worth reading. Parker had high standards in this area too, fucking and sucking early on Toby, the Colt model, one of the best-looking early British dicks (people ought to check his things out, he's gorgeous, much more than Parker, who worships his dick in 'Chute', on one of the Colt Collections), and in the late 80s getting into vacuum pump sales and hiring Surge stars like Justin Cade and James Williams, who all had monster meat.
Mamie Van Doren is one of the most crude and vulgar of the old C-Minus starlets (one of my friends calls her 'the Poor Man's Jayne Mansfield', and she is always talking about fucking various Hollywood types like Warren Beatty. She has zero class, and was always bad in movies like 'High School Confidential' (easy to imagine with title like that.)