Here's my problem!

I live in a house where our pet dog is a God, nice and friendly, happy-go-lucky house pet, which incidently belongs to my kid brother.Mum and Dad and all the family love our golden lab including me.
But what i cannot fregging tolerate is when visitors /friends come to my house and the dog jumps and slabbers all over them and this is regarded as acceptable behaviour by all the family.Why do they let the fregging dog do that, slabbers over the visitors clothes and they cant even fregging see it, fregging blind to this so fregging annoying!!!!!!!!!!Does anyone else have a problem with this or is it just me?