You cannot jump straight into "hard" play. The anus consists of two sphincter muscles; the internal one is involuntary and reacts to pain or stress by clenching.
Exploring anal play can be an incredibly intense and rewarding experience, but "hard" or more vigorous pleasure requires a solid foundation of safety and preparation to keep it enjoyable rather than painful. 1. The Golden Rule: Lube, Then More Lube hard anal pleasure
Offers deep penetration and allows the "top" to set a vigorous pace. You cannot jump straight into "hard" play