1. all encompassing term used to describe someone or something that 'has good banter';
2. something that is terrifically bantorious;
3. term coined in 2005 by an English website of the same name to describe the proliferation of humorous web content and the typically British way of interacting with said content and each other.
"I say Mr. Vice-President, whilst your shooting of your close friend with shotgun pellets is undeniably banterrific, do you not think it may have been a rather foolish idea?"
Ballerific is a way of life. If you are ballerific, you have to dress like a player, have tons of girls, nice cars, and a good street rep. You also have to play basketball.
"Man, that kid John is ballerific"
"Ballerific John is the MAN"
"Everyone wants to be ballerific"