ratin
a person who has the qualities of a rat. ie someone who is lazy, does not clean up after himself/herself, is sneaky, frequently does not wash their hands or flush the toilet.
God, my brother is such a ratin!
got a ratin'
To smell something stinky or highly odorous. Originates from the practice of rating farts from 1 to 10.
(*sniff*) Aw, man... I got a ratin' over here! You farted didn't you, you nasty son of a bitch?