An ancient variation of the modern "
silly" with it's origins in second century
Macedonia. It is believed to be closely linked with sediment in the form of Silt. Often used by those with a superior vocabulary as a means to demean those foolish enough to believe a spelling
mistake was made.
Distinguished Chap: "I say you oaf, stop behaving in such a sillt manner."
Serf: "
Derp!"
Distinguished Chap: "HA!"
Serf: "
Derp?"
Distinguished Chap: "Look it up you dasypygal, jumentous, napiform, oligophrenial zoophyte"
Serf: "
Derp."