Pull your horns in Tricky. You'll find that you'll have to let your daughters kiss a few frogs when they grow up; it's part of being a Dad. I've got two through to adulthood and it's not easy but past puberty* you'll have to lighten up or they won't have a life. At that age they'll want to do exactly the opposite of what you say anyway. Interesting times are ahead. And Alf was also joking, or are you really going to castrate your girls' boyfriends in future?
I have two lads ,but I suppose having a daughter you become a bit more protective of them.. At least a Tricky has learned to swear properly at me.. so it's not all bad..
* Theirs