Dads ever grossed out by periods? Men?

[Anoymus]

My best friend started her period when me and her were home alone and her mom went to go pick up her dad from work, I helped her through it told her a little bit about aunt flow (her mom mentioned the big parts) when they came back they had a box of pads. I asked her dad and mum how was there day and the dad said terrible, I asked why and he said that he's disgusted because his daughter had her period, are all dads like this or was it just him. How do men find out about this stuff other than there wife?