The Piss Mom Off Chromosome, otherwise known as the "I'll keep my room a mess just to defy the old nag", as well as "if you tell me what do to I'm not going to do it".
Warning, this chromosome comes along with extra special add-ons like "go have a shower, your body is changing (ya stank)", and "can you please remove your shoes - preferably to a location miles from me", all followed by a resounding "NO!"
This chromosome dramatically changes a luvy, snugly little boy into a sarcastic, foul mouthed, defiantly other worldly, raised in a barn, comatose, genetically altered, Nintendo DSI attached man-child who, surely to GOD I never gave birth to.
It's almost like the terrible twos didn't leave, they just hibernated for a few years, then came back with a vengeance to crap all over my world.
And what's with this plowing through my fridge and food cupboards like a Tornado ripping through a town? Nothing but crumbs and dust on the floor in his wake.
Okay fine, I'm kidding.
*The man-child is still living - I haven't murdered him...yet
**I've got an 8 year old heading in the same direction. Yay me. Humph!
***I was never like this, never...really ask my mom...