1 definition by spizzy_21

Top Definition
1. Game played in the classroom.

2. Describes the posture of people sending SMS's, tweets, emails, facebook status, ebay, blogs etc.

3. A good way to miss your turn-off, walk into someone or have a crash
John: Hey Lisa, check out Jeff...
Lisa: Yeah, he's breaking up with Kate...he's been heads down thumbs up all day

John: Hey Lisa, what's with the heads down thumbs up?
Lisa: oh, I'm tweeting how lame my friends are...
by spizzy_21 October 09, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.