A Eugene is a mentally strong guy. Savvy with office politics. Can be a bit of a beta male but knows what he wants and creates a plan to get it. Some plans can get complicated but generally work. He is likable and sometimes a bit shy.
He can move the world and change ideas. Very book smart.
Also has a big dick and knows how to sex.
"Hey, he is liked a lot by his neighbours! He must be a Eugene."
"That chick clings to him like foil." " Yeah, I hear he is a Eugene in bed!"
" That guy totally Eugened his test. He was given honors!"