Brazilian word for ass.
Fuck You = Vai tomar no cú.
The Gaelic word for Irish Wolfhound. usually put with Cú Chulainn who is an Irish mythological hero.
Also, one of the most protective, loyal, and amazing men you will ever meet. If you ever get to have one as your friend, consider yourself lucky.
Look at that Cú! those dogs are huge but so lovable.