I have always been aware that some boys gave their sisters' dolls haircuts, but I never had the urge. As long as my sister left my transformers and hot wheels alone, I had no interest in her dolls.
Speaking of which: I do recall being a bit of a toy snob. Today I'm a food snob and chocolate snob (won't eat fast food, won't eat hershey) but back then I was a toy snob. The hot wheels brand of cars was made of die-cast metal, and I lined them up on the edge of my bed. The matchbox cars were all plastic - I left them out in the yard.
Well? What? They just didn't roll right. Cheap pieces of junk...