To "Luke" someone/something is to repeatedly stand in front of the person (or thing) when you are in a conversation with somebody.

sexiest mother fucker in the world!!

Some one who's better than Matt

Luke Is someone you like. He’s very handsome, funny, and all around someone you want to be with. Luke is someone you you have a crush on. He tends to like girls with brown hair and eyes and people who make him laugh. Luke is the nicest person in the world who will stick up for you even if it means he will be disliked. Luke is just an amazing person

Lukes are probably the coolest people you've ever met, if you have the good fortune of getting to know a Luke you are one lucky individual. Lukes have phenomenal fashion sense and are the best kind of friend you could ever want to have. Luke is also subliminally altering the minds of the public to begin laying the seed for world domination. Luke is an evil genius, but because of his sweet and quirky personality fools you into believing he is harmless.

"Luke" may also be used as a descriptive word.

A Luke is a sweet guy, and completely insecure. He loves music, and tends to not know so much about Pop Culture. Easily falls in love with girls who are sweet, and will never get over them, even if there's no chance he'll get her. He tends to be clueless, but he remembers everything. Also loves Cheez-Its.

The most amazing person in the world. Luke is brilliant, hilarious, and easygoing. Many people are attracted to Luke's personality and stunning looks. Luke is a loyal friend and ready to comfort anyone in need. His love for those close around him and loyalty makes him wonderful. Meeting a Luke will change your life because of his strength and love for others. He is a solid rock that makes it through the toughest situation, handling common issues with grace and ease.