
Great question! This is my only option so I’ve gotten quite familiar with it. First, cleaning out! For some folks, simply pooping and washing the exterior will be enough. To be doubly sure, I highly recommend you get an enema bulb! These are very simple, easy ways to clean your interior! A little lube on the tip can help, too!
Third- lube, lube, and more lube! While the anus has some natural lubrication, I don’t recommend going with just that and what’s on a condom if it’s in use (which I also recommend). Lubricate your inside, outside, and then on your toy or partner. Penetrate slowly until you feel comfortable. You should control the pacing here so you’re not in any pain or discomfort. Go from there.