Rooves or roofs

Plural of words.

Is it rooves or roofs
Is it Hooves or hoofs
Is it Dwarves or dwarfs

That first one ''rooves'' does sound crazy to me.

roofs, hooves, dwarves

Actually, I'd opt for "hooves" and "dwarves," but "hoofs" and "dwarfs" are equally acceptable. The dictionary has no entries for "rooves," nor have I ever seen it used as the plural for "roof." People will usually say "rooftops" or "roofs." However, one will often hear "roofs" pronounced like "rooves."

I am a billionaire.

Hm, I say the following:

dwarf - dwarves
wife - wives
roof - rooves
life - lives
hoof - hooves

It seems that according to wordreference.com, I say it right ("rooves") but it is spelt as "roofs."

http://www.wordreference.com/english/definition.asp?en=roof

What is the plural of poof then?

Poof is a contraction of "poofter", an informal word. Slightly old fashioned or rather rude, I would say, since the correct thing would now be "gay". Being a contraction if would have to be "poofs". Hope you don't have a contraction yourself.

Ok, whatbout yoof?

355 "yoofs" and 13 "yooves" in my searcher. That amounts to 96,47% Internet usage of the first.

Do you always do what the Internet tells you?

I spoke of "usage" and that was a quick way of checking. Please tell me what "yoof" exactly means. Not in my Collins Cobuild nor in my everyday speech. Thanks.

It's media slang for youth as in "youth culture". It is used ironically.

Is the plural of father-in-law ''father-in-laws'' or ''fathers-in-law''.\
What about the plural of ''son-of-a-gun''.

It's "fathers-in-law" and I'd say "sons-of-guns" just like "governors general" and "sons-of-bitches".

dwarf - dwarves
wife - wives
roof - roofs (but pronounced /ru:vz/)
life - lives
hoof - hooves
poof - poofs
proof -proofs

''Rooves'' doesn't sound crazy: that's the way it's pronounced. It's just misspelt.