The Cornerback position is a slightly more complicated, intricate sex position than most, but it will make for all the more bang when you finally nail it.
Both partners should lie down on their sides. One partner should spread their thighs to make room for the other partner to get close and personal with their hips. It's easiest to think about what angles are required to achieve penetration (or any other activities you plan on doing!) to figure out what angle the two of you should end up in. Both partners have free hands to help make getting into this position easier. This also provides more options for mutual stimulation.
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More About The Cornerback Position
In this position, one partner needs to get between the legs of the other and adjust themselves accordingly to find just the right angle of entry. Once in, the penetration should be on target to hit the right spot, on account of the direct line of entry achieved through this body placement.
While you shouldn't be expecting a wide range of thrust given the physical restrictions, the resulting depth and intensity will more than make up for it. As far as achieving total physical intimacy goes, this position is well worth exploring with your playmate when the time comes to try something new.