1. To have a point of view and to stick to it rigidly despite the logical reasoning of others even though you know that you are actually wrong.

2. To intentionally make yourself seem unapproachable and socially inadequate by way of interrupting teachers or other random members of the public in mid conversation and shouting out a technical scientific term that may or may not be totally accurate.

3. To have ginger hair and leave it so that it grows to the stage between long and short. After this, the hair is maintained at this length but not treated by washing, combing or any other form of control. When the above has been done, the subject must develop a tendancy to lash out at and/or shout profanities at anybody who suggests that they manage their hair and then to storm off and cry.
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Person A: "No, seriously, supersonic flight is at the speed of sound.
Person B: "NO IT ISN'T! It's at the speed of light. You're such an idiot!"
Person A: "Ok, no need to do a Daniel, let me explain...."
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Person A: "Did you hear that show on the radio yesterday?"
Person B: "No, but how do we get radio anyway?"
Person C: "ELECTROMAGNETIC SPECTRUM!"

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Person A: "You know, people might take you more seriously if you cut your hair"
Person B: "F*** OFF! You're making my life a misery!"
*Geek Slap*
*Brisk Footsteps*
Person B: *crying*
Person A: "God, why does he always do a Daniel when people try to help?"
Person C: "No idea..."

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by Frederick Rogere September 21, 2007
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Posting a status on Facebook, then replying with multiple comments before anyone else has responded - i.e. having a conversation with yourself.
Doing a Daniel:

Daniel: Feeling happy today.

Daniel: Although I'm kind of sleepy.

Daniel: Might have a nap.

Daniel: Thanks for reading.

Daniel: That is all.
by Ryme November 12, 2011
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Fake flexing something not in your possesion in order to emit a jealous reaction from those around you even though they do not give a single shit.
Daniel: "Oh i bought trainers for £200"
Random person: "What brand?"
Daniel: "Oh Nike. Black and white trainers."
Random Person: "For £200??"
Daniel: "I never said they were £200"
Random Person: "Stop doing a Daniel"
by Lajsbsk October 13, 2019
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leaving the conversation without saying anything
" Where did he go?"

"He's gone again. He's always doing the daniel."
by obi knobi December 16, 2020
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Yes, YES! They Indeed do, all the women hotdog eaters say its soo long and tasty that the ketchup doesnt have taste.
Girl: Did you enjoy Daniel & Josh's Hot Dogs? Do Daniel & Josh have big Hotdogs

Girl 2 I Indeed did!!
by Daniel And Josh June 13, 2020
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When you fall asleep during sexual intercourse to wake up with the other party missing
I was so drunk I ended up doing the daniel last night
by March 10, 2023
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