A step in the wrong direction??

So this morning i was painting my toe nails, and Mady was watching eagerly. Of course, i told her one day while she was napping i would paint her toe nails so she could match me. Frank, being the over-protective dad that he apparently is, jumps right in. "You can't do that!", to which i obviously asked what's wrong with it, i mean really, it's just nail polish. This is the comparison he makes so i can understand his point of view better. "It's like an older kid saying, It's only marijuana mom, i wont do anything worse!". Seriously?! He is comparing toenail polish with smoking marijuana!