Tortue folle.
You say, "tortuga loca."
you say You resemble a turtle in French like this, Vous ressemblez a une tortue.
To say crazy in French, fou,(f-oo)
bizzare but it sounds better if you say it like my friend Corrine with a "crazy insane" French accent
'ma tortue'
Fou (crazy)
You can say "Je ne suis pas fou/folle" in French, which translates to "I am not crazy."
folle de toi
Chat fou.
je t'aim
Vieille femme folle
un amour fou