Well, when you hit your head on a tree branch, do you say 'fock!' or do you say 'Ouchy!! Where's my mommy to kiss it and make it better?' I think the mommy one would work best here unless it where a very big tree branch and you happen to have cracked your head open. That's when you say every fockin thing that there is that is a curse or... yeah...
Dammit, I feel like I'm giving a swearing lesson... I suck my own dick... that's an inside joke, I don't got a dick unless I had sown a hot dog onto me, you know... I can because I am Sally!!