A Human Droideka is created when ones penis is attached to his nostril by any means (superglue, sewing, etc.)
The name comes from the fact that in order to move while in Human Droideka form, one must roll in a fashion similar to Droideka from Star Wars.
Seth: Dude David was so wasted at the party last night, he passed out!
Ryan: You should have stayed, Evin and Nick turned him into a Human Droideka with superglue. When he woke up he started rolling around the house looking for his pants.