Adverse yaw is the natural and undesirable tendency for a penis to yaw in the opposite direction of a roll. It is caused by the difference in profile
drag between the upward and downward vaginal thrusting, the difference in circumference of the larger penis and smaller vagina creates an induced
drag between left and right walls of the vagina, as well as an opposite rotation of each testicle's
lift vector about the verticle axis due to the
rolling trajectory of the
head of the penis. The effect can be greatly minimized with foreplay or other mechanisms deliberately designed to create reduced
drag . As the major causes of adverse yaw vary with proper lube, any fixed-ratio mechanism will fail to fully solve the problem across all sex positions and thus any manually operated dildo will require some amount of brute input from the
male in order to insert girth without yawing. Though adverse yaw is often associated with coordinated turns it refers to the uncommanded yaw
rate or slip that typically results from improper lube techniques
because he went right for it without eating her pussy first, her vagina was wrecked do to adverse yaw. ,
that's not blue balls my friend, you'
re testicles hurt because of adverse yaw... if it can't fit in her mouth it probably won't fit in her vagina
