A navigator who has no clue where he's going.
Someone who harps on about all of their mediocre accomplishments.
Hey! A little help here! Add your own funny insult.
Problem Exists Between Keyboard And Chair. Help-desk slang for "You don't know how to use a computer." See also Computers.
Another Shakespearean insult, this time from King Henry IV, Part 1. See also Shakespeare.
Proof that Shakespeare started the "your momma" jokes. See also Shakespeare.