1) To always look for the positive in life.
2) To want somebody so bad that it drills your mind night and day. The desire can be much more intense when you realize that the two of you could never work due to distance, people, place, etc. Inspired by The Killers song.
1)Even after I crashed my car into the exit ramp, and my insurance turned down my claim, the fact that nobody got hurt made me feel like Mr.Brightside.

2)When I heard about her Friday night hookup, my inner Mr.Brightside realized there was nothing I could do from across the country.
by trustbetrayal February 20, 2010
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Someone who goes through horrible times, and still thinks positive.
"Atleast you're Mr.Brightside."
by JADE*** afi February 13, 2005
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When someone only knows/likes the most popular song by an artist or band
Person 1: I like Michael Jackson too! What's your favorite song?
Person 2: Thriller!
Person 1: You need to get help for your Mr.Brightside Syndrome
by Queen_Of_World_2079 September 29, 2019
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