The phrase "I'll pull my balls out right now" is often followed by the phrase "Trademarked By Fadi". The Second phrase is to be said softly and very fast. Almost as if to be said under one's breath.
The actual phrase is to be used when someone directly attacks or insults your intelligence or ability.
Roger: Mike, you're such a tool.
Mike: I'll pull my balls out right now! ... (Trademarked By Fadi).