The

derivative of sex can be expressed as a linear

function reflected across the

X-Axis. Depending upon the

participants (and their

skill), it could be any

variation of the following

expression:

Y` = -X

That's what it

should be, anyway. An

unforunate (and often

embarassing) scenario is when

one member of the party is somehow

incompatible, resulting in a warping of the original

F(X) equation into something other than a

concave-

up parabolla. In this case, the

sex derivative may appear as a sheepish

horizontal line at

Y = .

Don't let this happen to you. Make sure

*your* sex is both

inverted and

exponential.