You're standing outside of a party and the girl next to you takes out a cigarette, but there's no one there to light it for her. You approach her, but instead of handing over a lit match, you hold out your wrist and twist your cufflink. A flame appears, the smoke is lit, and the ice is broken.
Yes, Lighter Cufflinks exist, and they are awesome. Instead of buying Bics that run out of juice in a week, invest $90 in this hot accessory, affix them to your dress shirt, and hit the town. And we should add that the warning statement instructs buyers to not "use while under the influence of drugs and/or alcohol." Good luck with that.