People have to get used to doing it... it depends on their backgrounds- but I enjoy going down on my boyfriend... I mean it's not everyday you are able to have a penis in your mouth and make someone happy at the same time... it's a great feeling to know he's enjoying himself... and he gives me some pleasure back which I think is always a plus... so erm to be honest, I think your friend has found a rare girl- but there is nothing wrong with that... xx