From Brent, or Brent's friend Jeff:

girls require time and money, so
girls = time x money
time is money-
time = money
girls = money x money
money is the root of evil
money = evil^.5 so
girls = evil^.5 x evil^.5
and finally we simplify
girls = evil

yea, i dont know, the math seems kinda funny but it seems right