mongamolestictripod

Someone who is acting stupid and being an idiot is a mongamolesticteipod.

My friend Bill is a mongamolestictripod.

Zommer

The nickname of a zombie type thing.

Alfie is a zommer.

shpongalong

This word describes a person who is acting idiotic and crazy.

That man over there is a massive shpongalong.