Beetleneck began as term derived of the Chicago "bake", "flame" or "roast" format. The term was coined after a student witnessed a Long Necked Trachelismus.
Beetleneck can also be a nickname, an adjective, and a verb, essentially replacing any word. In modern terms, a stim word.
There is a false definition on the urban dictionary of beetleneck, made as slander in 2015. Beetleneck is NOT a slur or derogatory term, and was never used as such.
Yo, what up beetleneck! How you been?
Get yo beetle-neck-teck-deck built neck ass!
Can I beetleneck a sip of that water my boy?
Quit beetleneckin my chips. You've already reached over and taken several.
Yo can I beetleneck your bike over to the store real quick?
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"