Definition:
Rad, awesome, cool, dope, dank, loud, ill, tight, stanky, jumzy, baller, pornical, metal, mint, spankin, trippindicular, funky fresh, sick ass, bomb diggity, it's all good, that's the business, tits on my dick,
Origin:
1) In the alphabet letter 'R' is 18th, 'A' Is 1st, 'D' is 4th, put it together, 1814
2) In the year 1814, the Battle of New Orleans occurred, which is known for being pretty rad