A person who is a dumbass, schmuck etc.
That guy is such a derper, why is he listening to the backstreet boys?
The language in which the ends of certain words and/or syllables are replaced with "-er" to provide an enriching and fulfilling sentence.
"Actually, flerper derper skerper, indeed."
Derper is herpin' & derpin' all the ding dong day.
A non existent word made up by the "smartest" women in the world, shortly thereafter discredited by the smartest man in the world.
Haha yeah you derper
a person who cums too early; or someone who fucks it up, can be used in many different scenarios. refer to example
"Man I really derped that exam"
"He's terrible in bed, such a derper"
or just plain "you fuckin derper!"
the combo of the Dr. and Pepper in Dr.Pepper derper
man i could use an ice cold derper