are you my daddy?
You can add bumps, ribs, and tingly lotions to condoms to try and get guys to think their awesome. You can put free dispensers in bars and dorms to get them to use them when the moment's right. Or, you can scare the crap out of them with a good laugh like Brazilian condom brand, Olla, tried to do.
Olla hand selected dudes on Facebook, then created fake baby profiles with their name (just adding Jr. to it) and sent them friends requests from the baby's account.
Unfortunately the joke is revealed immediately, losing some of the scare tactic, but it's definitely a clever way to create some buzz on Facebook in a way no one has done before.