The issue of penis size and ethnicity/race is something that comes up constantly on this forum. It seems that there is a consensus: there are large and small penises in every ethnicity/race.
It is likely that these women only had sexual relations with a few Arab men, and so they have generalized these experiences to the entire race.
There's also the correlation between penis size and alleged intelligence. I read a book called "The Male Body" that says that people assume that if you have a big penis then you are only sexual and can't be intelligent. It said that this is one reason that black men get upset about the stereotype that they have large penises: because it suggests that black men are only sexual beings and can't be intelligent.
Okay. Sorry. Don't mean to go off on a rant there. Just sharing.
I couldn't agree more.