on my honeymoon i drank so much liquor i got [whiskey dick] and could not crack a fatty for the life of me, so we filed for an annulment
noun: vulgar slang
"on my honeymoon i drank so much liquor i got [whiskey dick] and could not crack a fatty for the life of me, so we filed for an annulment" What is the definition of "crack a fatty"?