A clown neck is the space between a clowns chin and his shoulders. It is often missed when the clown is applying his makeup and as such is a natural skin tone. Possibly by mistake, although this could be a delibrate professional overlook as to avoid make up stains on there clown costume.

A person who doesn't realize they are transgender yet, or is in denial; an undeveloped transgender person. When they realize, it's referred to as the "egg cracking."

A balding middle aged man wearing a under armor mock turtle neck