All (one's) geese are swans proverb
Said when one is exaggerating
Don't believe what he is saying. All his geese are swans!
To overstate or embroider the merits, or successes of someone or something
Describe a story that is made-up or imagined rather than based on facts
Extremely stupid
Did you follow his guide and take your mom's money? You are thick as mince.