Oh, the things people want me to review. This is a photo (clearly taken by a serial killer) of the RhinoStep. The website features a perverted cartoon rhino, of course. Here is how you use it:

The user, in the missionary position, slides his feet between the mattress and the padded bar and curls his feet around the bar. This position allows the user the use of his legs during lovemaking thereby increasing his physical stamina and helping with penetration. The RhinoStep fits over the fitted sheet and under the flat sheet. It can stay mounted to the bed between uses hidden under the sheet and comforter. In some cases your partner may not know you have it.

Yes, your partner will NEVER KNOW why you are THRUSTING SO VERY WEIRDLY and are seemingly addicted to missionary. It will be your little ~secret~.