Definitions by spufidoo

AHDD 

Anus-Humerus Differentiation Disorder:

The inability to know the difference between your arse and your elbow.

A condition widely associated with stupidity, incompetence or cluelessness.

He's got AHDD - He's so inept, he doesn't know his arse from his elbow.

AHDD by spufidoo May 13, 2024