I’ve had the urge to bottom for a very long time. Besides finding a patient partner, the other big concern for me is being clean inside. I’ve always not engaged in spur of the moment meets with a potential top because I’m never sure. Last thing I want is to ruin a tops experience with a messy dick.
I use a shower attachment to clean inside me, although you should be very careful with these. keep the pressure low and not too hot. A douche is a much better idea for a beginner. Simply squirt some water up there, hold for a few minutes, then release. Repeat until the water runs clear.
I started by playing with some dildos and you soon learn your body and the best method to stay clean.
I've also found fasting for 12 hours or so can make things easier.
