Strap-on some fun! Strap-on dildos allow couples of any sexual persuasion to enjoy hands-free penetration and can be an exciting addition to the any sex toy collection. Strap-ons are most commonly associated with lesbian sex and gender-play but are gaining popularity with hetero couples who want to overcome the anal sex “taboo.” Women can use strap-ons to enjoy the pleasure of penetrating their male partners. Men with erectile dysfunction can also rely on strap-ons to assist penetration.