Definitions
1.nounA person who acts stupidly or foolishly; a person who derps.
2.nounA stupid mistake.
3.verbTo act stupidly or foolishly
4.verbTo make a stupid mistake
5.verb(of eyes) To point in different directions; (of a person) To have a facial expression with one's eyes pointing in different directions.
6.interjectionDraws attention to an act of foolishness or stupidity."I put chips in my soup instead of crackers. Derp."
7.interjectionPlaceholder for unimportant details, blah blah blah