Retarded. Having a gpa under a 2.0. Not being able to get laid even though the person tries constantly.
Luke: Dude I totally got laid last night! I brought this girl back to my house and gave her the beans!
Dan: Of course, dude. You're the real diehl.
Dan: Of course, dude. You're the real diehl.
by the man 1010 February 6, 2009
Get the real diehlmug.