2. (noun) a pair of testicles or gonads on one's jaw.
3. (noun) a really good blowjob, by which, a deep throater's progress is thwarted by balls, moving or stationary, against one's chin.
"Oh Hell yea"
"Sugar Daddy if i had nuts on my chin would those be chin nuts"
"Oh hell nah bitch you got a dick in your mouf"
would those be chin nuts?"
"Hell no bitch you'd have a dick in your mouth!"