Is this weird for a 13 year old girl...?!

yup of course that is normal I was the same way when I was 13 (uhh 10 years ago!) and man I thought it was so gross to imagine a man naked, well I have a boyfriend and see him naked and I dont find it gross anymore and find it a big turn on...I guess the mature you get the more you wonder. Its a maturing process. But your normal.

Believe me men are a waste of time sometimes. And some are pigs, stay single and have fun with the girls those girls are girls at that age.

I remember when I was 13 back then and felt the same way

Both boys and girls at that age keep imagining how those of the opposite sex look like without clothes and, sometimes, how it would feel like being with them. There is nothing absolutely wrong with that; it's part of the growing process. But one should not allow fantasy to rule and ruin one's life. It's better to be occupied in worthwhile things than always talking and thinking about people of the opposite sex. Afterall, there is nothing there that you won't get to know in time. Really, it's all a matter of time. Take good care of yourself!

It's totally normal.

Believe me, you don't *want* to know what 13 year-old boys are thinking about their female counterparts.

To be quite honest it is very refreshing to her a 13 yer old girl sound like 13 year old girl. Your fine I thought boys where cute too but imaging them naked never crossed my mind.