good info here for the beginner, the silicon lubes are great but the less expensive ones will work but dry out or feel greasy while used. I shudder when a previous writer mentioned vaseline and blood. No, you don't want blood, it indicates a tear in the intestinal wall and you certainly do not want a tear, certainly use a condom on your penetrator. However, most tears will heal in 2-5 days if not severe, but avoid them by using a butt plug to expand anus and enough lube. A large dick (over 8 inches or very wide) should be avoided until you are practiced as a rough lover with a big dick can cause bleeding in a novice. Anal is wonderful to experience but takes a little getting used to to avoid pain and the dirtier aspects. To avoid the dirt practice cleaning until you are confident you are clean and use an 8 inch rubber dildo to check to see if you are clean. Everyone is different so practice with yourself or an understanding partner. Happy butt fucking to all, no matter which end you are plying.