Someone who is extremely addicted to his or her blackberry and who is pinging all the time. Mostly talking about senseless stuff.
''I just broke up with my boyfriend. He's such an ass.''
''Oh sorry, come again? I was just pinging to someone I met at the supermarket that I am drinking coke now."
"Gosh you're such a pingbaby.''
A word of Norwegian origin. It's used to describe a cowardly person that usually has bad comebacks. People named Jacob and Martin are usually Pinglosts.