On a stack of Penthouse Forums.

People are always after me about my bound copies of Penthouse Forum.

Every sketch he pitched began like a nursery rhyme and ended like a letter from Penthouse Forum.

Penthouse Forum ran a series from the book and it made Naiad an internationally-known publishing name.

But no matter that it wasn't up to Penthouse Forum standards.

Penthouse Forum (1986 & 1991)

Later Guccione started Penthouse Forum which was more textual in content.

Sounds like a Letter to Penthouse Forum.

Lauren Collins took note of its homoeroticism and incest, and compared some passages to Penthouse Forum.