look up any word, like plopping:
 
4.
Popularized by the internet comic, Cyanide and Happiness, the prankster removes the doorknob to the victims' room when they are asleep. After the knob is removed, the prankster sticks their dick in the hole and knocks on the door to wake the victim up. After the victim tries to open the door, mass chaos will ensue.
Directly from the Cyanide and Happiness comic:

-Dude I totally dick knobbed Dereck last night!
-Hah! He touched your dick.
-I even had an erection at the time.
by Kastera1000 August 25, 2010
 
1.
Step 1: Wait until night time. When target is asleep, remove door knob from door.
Step 2: Insert dick into hole. Use stepladder if necessary.
Step 3: Knock. Wait.
Step 4: Brag.
Jerry: Totally dick knobbed Jerry last night.
Rick: Hah! He touched your dick!
Jerry: I even had an erection at the time!
by Megagnome August 22, 2010
 
2.
A prank where late at night you remove the door knob and stick your dick through the hole. Then you wake the person inside.
Yeah man I totally dick knobbed Joey last night!
by WallaceAndGrommet August 22, 2010
 
3.
How to dick nob someone.

Step 1: Wait until nighttime. When target is asleep, remove door knob from door.

Step 2: Insert dick into hole. use a step ladder if necessary

Step 3: Knock.

Step 4: Wait.
-Dude I totally dick knobbed Dereck last night!
-Hah! He touched your dick
-I even had an erection at the time
by Toxic_S August 22, 2010
 
5.
a complete loser who thinks they are all that. most likely thinking that they know everything and usually end up making a complete ass of themselves
open the fucking door you dickknob
by questionable-sanity June 18, 2008