A phrase or exclamation used to describe something particularly gnarly, incredible or unbelievable. The term is derived from the extreme sports prowess of Derrick Whipple, from The Jim and Derrick Show.
Damn dude, that move blew my mind! He's trippin on a whipple dip.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!