I would point out the logical fallacy in the cross stitched statement, ie that 1 penis can impregnate millions of females, where as 1 vagina can only birth a maximum (on average) of 20 children, but they apparently don't allow ANY posts by males.

I digress, a penis has a greater probability of birthing several countries, compared to 1 vagina birthing a large soccer team:

X = Higher value due to efficiency.

Y = Reproductive efficiency of penis.

Z = Reproductive efficiency of vagina.

pr(X|Y) > pr(X|Z)

Furthermore, I would take this notation further by including a proof() function for clarity:

A = Distribution of DNA through reproduction.

B = Penis being more efficient.

C = Vagina being more efficient.

D = Penis more valuable.

E = Vagina more valuable.

pr(D|prov(A,B)) > pr(E|prov(A,C))

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