In geometry, there are surfaces that do without an inside or outside—and some need at least four dimensions to exist ...

Frotting falls under the frottage umbrella, which is all about achieving pleasure through rubbing and friction, and includes everything from dry humping to scissoring and tribbing. But frotting ...

Small, curved ornaments are a perfect fit for cardboard or Styrofoam egg cartons. And while you’re on your third coffee run ...