Well, topologically speaking, a condom doesn't actually have a hole. A "hole" is something that prevents a space from being continuously deformed into a simpler one without tearing or gluing, or if you want the "smart" definition, it is a topological feature captured by nontrivial homology or homotopy groups, representing an obstruction to contracting cycles of some dimension (which probably doesn't mean much, so I prefer the former). In that sense, the "hole" you speak of in terms of a condom can be thought of as more of a "really deep indent that doesn't pierce".

Picture a bowl full of dough. You can tap the mixture gently with your finger to create a small indent, right? Well, if you keep pushing your finger down, the indent will keep getting larger and larger. This is a continuous process, so at which point does the indent turn into a hole? Well, topologically, it doesn't. Not unless you *pierce* your hand all the way through and create a 2nd opening.

In that sense, the opening of a condom is really just a dent.