Abbreviation for 'Don't fuck with". To be used as a label placed on objects or areas in which the owner does not want others to perturb, alter, or otherwise disturb.
I was going to surf the internet on Bob's computer today but I didn't because he placed a DFW note on the keyboard.
Down For Whatever
A person who just don’t give a fuck about nothing. They’ll do whatever drugs, will do anything sexually, and just are wild as fuck in general.