New York slang, Basically when a female is ugly with a bad body or ugly with a good body also known as butter face, bad kills basically means that would be a bad girl to fuck cuz she not attractive
by bluxdz February 7, 2024
Get the Bad killsmug. by Banana Gator September 27, 2023
Get the Down Bad Badlymug. 
by Cool.Y0da February 7, 2023
Get the Not bad but not goodmug. 
A 21st century idiom that is meant to serve as a stark warning for humankind. Let it be known that "bones" and "willies" literally pose a significant threat to ones health and well being... lit-er-ally. Whilst it may seem prudent to dismiss this admonition as nonsense or propaganda, I'd ask you to reconsider. The originator of this phrase is a visionary with diabolical intelligence and magnificent intuition... like that of a gypsy wizard.
When the world learned that bones & willies are bad for your health, there was mass confusion. The tension became so thick you couldn't cut it with a knife... it was like a wall.
by "JE" October 16, 2017
Get the Bones & Willies are Bad for Your Healthmug. by Bigface21 November 19, 2015
Get the crazy mad badmug.