Pint of Mess

Someone who is such a mess in terms of appearance or personality that you feel the need to quantify their level of disgrace.

Can also be used to describe obese, disabled or physically scarred persons.

Rab: Did you see Michael last night?

Al: Yeah he looked like a disgrace.

Rab: Yep yep. One might say he was a Pint of Mess last night.