1. I feel exhausted
Je suis cassé(e) (*) Lit. I'm broken.
Je suis vanné(e) (*) I'm shattered.
Je suis nase (*) I'm knackered.
Like its opposite la pêche, it's found in dictionaries and therefore used and understood by all.
Je suis nase-broque (*) The origin and therefore the spelling of the suffix broque is rather uncertain - it may well come from "broke/broken" - but what it actually means is not important, it sounds good.
Je suis explosé(e) (*) Lit. I'm exploded.
Je suis fracassé(e) (*) Lit. I'm smashed.
2.Astonished Je suis scié (*) It bowled me over. It staggered me.
Il m'a scié (*) Same meaning as above.
Ça me tue! (*) Lit. It kills me!
3.I feel upset J'ai le cafard (*) Lit. Cafard is a cockroach. Means to feel depressed - I'm down in the dumps.
J'ai le blues (*) Same meaning as above.
J'ai le spleen (*) Originates from Voltaire's "Dialogue de Pégase et du vieillard" in 1774, and also features later in 1857 in the title of a poem by French writer Baudelaire where he wrote about his melancholy and depression.
J'ai les glandes (**) French people feel anger swell in them through some glands that they have in the back of their throat.
J'ai les boules ! (**) Lit. I've got the balls. Same meaning as j'ai les glandes, which are often also called les boules. This expression can be completed by an appropriate gesture: Hold two imaginary pétanque balls, one in each hand. Then repetitively shake your hands in front of your neck, as if enormously swollen glands were growing out of your throat.
J'ai super les boules (**)
Je suis vert(e) ! (*) Lit. I'm green!
Traditionally, red is the colour associated with anger. Green is probably the next stage up, the colour that your face turns to when you reach a level of utmost anger and consternation.
So much so that it makes you feel sick, hence the other expression: Je suis écœuré(e) (*).
J'ai les nerfs (*) I'm getting angry.
Je suis vénère (*v = Je suis énervé) I'm angry.
J'ai la haine ! (**) Lit. I've got hatred.
I feel hatred within me. Definitely stronger than j'ai les boules. With this expression, it's impossible for your friends not to take you seriously. They'll get the message that today is not the right day to mess with you.
4.I feel good J'ai la pêche ! (**) Lit. I've got the peach!
Officially translated as "I'm full of get-up-and-go!" or "I'm on form!". The fact that this expression can be found in dictionaries means that it is understood by absolutely everyone. But as a result, it loses a tiny bit of its coolness.
J'ai la patate ! (*) Lit. I've got the potato!
Patate here has exactly the same function as pêche. This expression is not in dictionaries... yet.
J'ai la frite ! (*) Lit. I've got the chip/french fry!
Again, there is no point in trying to figure out the link between the word and its meaning... After all, France is the country of food. Anyway, dictionaries translate it as "I'm on top form!".
J'ai la banane (*) Lit. I've got the banana.
Finally, an expression that has a rational explanation! What does the shape of a banana refers to? The shape of your lips smiling, of course. Perfectly describes euphoria, doesn't it?