Im scared.

[YPrrrr]

Sometimes I have fantasies about fucking a non-existent sister. Is this normal?  

Quite navi;

[Daddy]

Sometimes I have fantasies about fucking a non-existent sister. Is this normal? 

I think so, this is what wikipedia says

consensual incest between similar-age brothers and sisters is not uncommon, according to a study by Floyd Martinson, who found that 10-15% of college students had childhood sexual experiences with a brother or sister.[7] However, 5-10% of those included intercourse; and therefore most probably represent a form of child sexuality.

[YPrrrr]

I think so, this is what wikipedia says

consensual incest between similar-age brothers and sisters is not uncommon, according to a study by Floyd Martinson, who found that 10-15% of college students had childhood sexual experiences with a brother or sister.[7] However, 5-10% of those included intercourse; and therefore most probably represent a form of child sexuality.

Ewwwww...

[NOA_Haunted]

I think so, this is what wikipedia says

consensual incest between similar-age brothers and sisters is not uncommon, according to a study by Floyd Martinson, who found that 10-15% of college students had childhood sexual experiences with a brother or sister.[7] However, 5-10% of those included intercourse; and therefore most probably represent a form of child sexuality.

Glad I don't have any brothers and sisters.