Noun; a mental deficiency such as the inability to retain a certain piece of information. For example the name of a certain person.
A man said to his wife: "You're brother-in-law's first name is a glarf to me, I know that you have told me a thousand times but I just can't retain it."
by Charlie A November 27, 2006
upon stepping up or down a step/curb, one only places a portion of their foot on the ledge and once full pressure of the body is applied, the foot slips down in a speedy fashion; therefore completing a "glarf".
"oh Leroy, did u see that stupid fuck just glarf on the curb walking into wal-mart!?!"
by tim downard October 31, 2008