A woman agressively kisses a man on the lips, holding his head with one hand while closing his nose, forcing him to hold his breath, with her other hand.
I’ve rarely seen breath play without gear like this in erotic imagery, even though it’s arguably the most common form of the activity. Being kissed forcefully can be a beautiful, passionate expression of dominance and submission, but being forced to hold one’s breath for the duration of the kiss adds dramatic elements of control to the act that I find exceptionally arousing. This is one example a simple, no-frills, yet highly effective kind of play and I’m happy to see that this image, suggested by discworldian, focuses on the play itself as opposed to distracting accoutrements.
That being said, please bear in mind that breathing is really important to do on a very regular basis and in highly predictable patterns. One easy way tops can ensure that they don’t over exert their bottom is to hold their breath in time with their bottom during play as well. At the very least, be mindful enough to maintain a mental count of how long you’ve been holding your bottom’s airways closed for. Erotic asphyxiation is only erotic if you can both still breathe after playtime is over.