A diet / work-out plan followed by a new dad, who wants to achieve or regain DILF-status
Tim knew that the summer was fast approaching, so he went on a DILF Diet to make sure he'd get as much attention as his kids when he took his shirt off at the beach
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!