by Rodney's sock May 11, 2022
Get the derfmug. by ur mummma October 20, 2008
Get the derfmug. Synonymous with a skilled ninja. Often used to describe a quick and fierce enemy who is extremely agile and deadly.
Person #1: There's that girl Sarah, lets go beat er' up.
Person #2: Fuck that! She's a derf! Im leaving her alone.
Person #2: Fuck that! She's a derf! Im leaving her alone.
by Slimescree January 7, 2008
Get the derfmug. by lookandlineage December 31, 2020
Get the derfmug. by Rodney's sock May 11, 2022
Get the derfmug.
Get the derfmug. by mabgywugewinuygcyugbayhgrvn8sb February 9, 2010
Get the derfmug.