basically when a guy is really close next to you and tries to make everyone leave the room and turns off the lights but you just see him as a friend you tell your friends to explain the proximity of him near you you tell them he is lapped up on you
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!