stands for Holy White Otter Tape Trashers; a more intenseway of saying what; a term used for shocking or suprising moments, or to describe a moment or person.
HWOTT? No he didn't!
What a holywhite otter tape trasher!
HWOTT!? Thats INSANE!
HWOTT!? That was shocking!
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!