Picasso; noun. A girl who is a mess. Think of Picasso's
work, and you're there. She has all the parts but they
may be mis-shapen, unsightly, or even in the wrong place. This is not just limited to
girls with faces like bulldogs chewing wasps, but it will give you a good idea of the starting point.
See also Monet and Van Gogh
'That
bird mings, what a Picasso'
or to an unsuspecting victim, 'Scuse me Picasso, can I get past'
e.g. Jade Goody, Janet Street
Porter,
Sonia from Eastenders