According to an online German to English translation, it means: You're a butterfly.
Du bist wunderschön das Kind makes no sense but translates as you are beautiful the child.
Du bist ein Lügner means you're a liar.
Du bist mein ein und alles = You're my one and only.
"du bist doof" or "du bist blöd" or "du bist dämlich" are equivalent to "you are stupid"
"Du Blödmann" is a common term used in this contextBut insulting people in other languages is not the way to win friends.
It means "you`re a dumb boy".
You are a great woman
'You are my everything' in German is 'du bist mein Ein und Alles'.
Ich bin - I am Du bist - You are Du bist ein/eine X - the use of ein or eine is dependant on the gender of the word X
You're a gem
In English: "You're an idiot."In Deutsch: "Du bist ein Idiot."Or "Du bist ein Dummkopf".Please note proper spelling of "you're" in the English.
Du bist blöd, Du bist doof, Du bist albern,