Originally posted by WIkipedia

"If I Said You Had a Beautiful Body ..." (in some sources called "If I Said You Have a Beautiful Body ...") derived its double entendre title from an old Groucho Marx quote. Songwriter David Bellamy told country music journalist Tom Roland that he regularly watched Marx's program, You Bet Your Life, where Marx sometimes used the quote while interviewing an attractive female contestant, then shake his cigar and raise his eyebrows to elicit a reaction. The comment stuck in Bellamy's head as a possible hook line for a song.