Freshmanning 

When kids (typically freshman) bounce their leg rapidly out of nervousness or anxiety, and annoys everyone around them

Kyle is freshmanning so hard I can hear his knee hitting the bottom of the desk.

Freshmanning by sillygooster February 11, 2019

freshmanizing 

The act of preying upon freshman girls. Most common freshmanizers are Juniors, followed by Sophmores then Seniors.

Dude! I made varsity freshmanizing this year!

freshmanizing by ThePriceisRite16 June 14, 2006

Freshmaning 

1. High school or college Freshman acting silly or childishly compared to the surrounding population.

2. General noob behavior

3. A silly, ridiculous, or improbable item or situation.

1. She was freshmaning down the hall...again.

2. So much freshmaning on the internet today!

3. The House is trying to pass that freshmaning bill SOPA.

Freshmaning by Random!Holmes March 24, 2012