Steve Harrington : Do you know who pauses Fast Times at 53 minutes 5 seconds ? People who likes boobies, Robin !
Robin : Ew ! Gross. Don't say Boobies.
Steve : It's not a big deal, okay ? I like Boobies, you like boobies.
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!