As a child you most likely played the pin the tail on the donkey. Pin the penis is more or less the same game only using cut out penises instead of tails and a poster of a naked man instead of a donkey are used.
If you know anyone with photoshop skills perhaps have them photoshop the future husband’s head onto an appropriate body.
Each player needs a cut out penis with their name written on it to avoid confusion. Participants will be blindfolded one at a time, spun around before trying to pin the penis where it belongs. The winner is the person closest to the mark. You’ll need an appropriate prize for the winner.
You can even use your cut out penises as name tags after the game!