Slippery Slope: Modern usage includes a logically valid form, in which a minor action causes a significant impact through a long chain of logical relationships. (wiki) So we have Marriage. Eternally described as between a man and a woman. We now have removed that requirement, a seemingly minor action (see above) We may very well see polygamy laws challenged. (Chain reaction) Possibly leading to 1st cousins who want to marry (significant impact) Note I said: that is not the agenda of Gays, (nor is it their problem). I just feel that the slip has begun. I don't however see how that leads us to pedophilia.