A shnoozee (also shnoozy or shnoozey) is a male person who is over 30 years old and still living in his parents small house where he gets food and stuff for free. His mother sings the 'old mac donalds had a farm' song every night and he falls asleep with his thumb in his mouth.
He also asks his parents if he can stay out a little longer than 10 p.m.
His parents don't really care but accept the way he is.
It's just someone who refuses to grow up and get a real life.
Shnoozee: I gotta go home. It's 10 p.m. and I couldn't get my parents on the phone to let them know where I am and when I come home.
Female: Gee. You are 34. Are your parents more important than me?
You are such a shnoozee! I'm done with you!