A person who rocks at gymnastics, likes to stay home or talk about how he preform different tricks while illustrating with his hands. Also gets aggresive if you mock his english skills. If you mock a didrik's english skills, you will most likely have to buy a new backpack, if you catch my drift.
Radnom guy: Haha, you spelled Ebay wrong!
Didrik: *gets a sharpie and writes akward things on your backpack*
Didrik is a Boy name. Used in Norway.
Didrik seems to be the kind who is fan of something.
And so on.
"Didrik is fan of lars"