Used to describe a female that is particularly hot.
Instead of saying " Id shag her"
Simply exclaim "Wid!"
The louder its said so that the female in question hears you, also adds points for bravery, or sheer sleazyness.
Again, this can also be used sarcasticaly, in relation to a mingin old woman, or a munter of a female/male.
" Check out the wifie at the bar...WID!"
" Wit a shagger! WID! WID! WID!"
Yo man I'm here on South Central on my DSL line with my 2000$ computer, talkin online cuz that's what gangstas do! Go on the internetfoo! Don't be fuckin wid me!