How do I use a condom? Roll the condom on when your penis is erect (hard), but BEFORE it touches your partner's mouth or genital area (vulva, vagina, anus.
However, if you start to put it over a penis or strap-on dildo the wrong way, don't try to re-roll it and reuse it. Toss out the condom, and start over.
And it's not as simple as ripping open a condom packet and just rolling it down on a penis. There are certain things you need to look out for, and.