Putting on a condom inside out is a bad idea - if the condom contains spermicide, which stops sperm from moving. Furthermore, wearing more than one condom at a time can cause a penis to lose sensation - or lead to a rip due to condom-on-condom . Ever since I got pregnant, my friend has wanted to get pregnant. Her boyfriend and her have s_x on a regular basis, so she's been telling me she's taking the condom with the sperm in it after he ejaculates and inserting it inside of her. All hail the condom, defender against every sexually transmitted infection and goalkeeper blocking each sperm trying to get you pregnant!Except not. While condoms can play a key role in protecting you, they're not the be-all and end-all of safe sex.