The vagina of a woman with excellent control of the pubococcygeous muscles. Typically, the woman can squeeze these muscles to tighten around her partner's penis during intercourse, squeezing it for added pleasure for the man. A woman can strengthen the PC muscles with Kegel exercises.
The head cheerleader is smoking hot, but she's a real dead fuck. Now, Ugly Wanda looks like a pile of steaming shit, but she's got a snapping gyro.