A spanking bench is a modern item of spanking furniture that has no historic past such as a birching horse, for example. Instead, spanking benches were invented in the 20th century by spankophiles and BDSM practitioners for consensual adult spanking play.
Spanking benches are different from historic types of whipping benches (on which the delinquent was laid horizontally). They only remotely resemble a normal bench and come in fanciful designs. Their common attribute is that an adult spankee is laid over them (and often, optionally restrained with straps) to receive a spanking in a kneeling position, on-all-fours position or bent-over-object position.
The top on which the spankee's torso rests is either horizontal or slightly inclined such that the buttocks are a little higher than the head. The angle should not be too steep, or blood will rush into the spankee's head.
Spanking benches are often built individually by hobby craftsmen, but commercial products have also become available on Internet shops and from BDSM studio furniture suppliers.