I knew a very, how shall I say, intellectually-challenged guy, and his none-too-bright girlfriend, in high school.  He and his girlfriend were low on funds and decided they would try female condoms.  And by female condoms, I mean plastic wrap placed over her vagina.  I know this will come as a HUGE shock, but it failed horribly!  
Fortunately, she didn't get pregnant, (God, I hope somebody that damn stupid never breeds!) even after receiving a healthy dose of baby batter through the hole which easily tore into the plastic.  The moral of the story; don't use Saran/plastic wrap for a condom!!!!  
  
I have heard that female condoms (the real thing) are somewhat of a pain in the ass, and don't protect as well as traditional condoms.  I hate the feel of a condom, but I'm not about to go without the original thing anytime soon I'm afraid!!!