Nippley

When it is so nippy (cold) that your nipples stick out - therefore making it a 'nippley' temperature.

"I turned the A/C in my car up to high! It's so nippley in here right now!"

Hall Monopolizers

When a large group of people are coming down the opposite direction in a hallway and refuse to move over to let you by.

Yeah, I was walking to my next class and this group of hall monopolizers wouldn't let me by so I had to scoot over against the wall.